Bad Image Checksum

hello friends,

I tried to upgrade my Windows from 2000 to XP. While upgrading my computer to Windows XP, I received the following error message -

"STOP: C0000221 - Bad Image Checksum. User32.dll is possibly corrupt. The header check sum does not match the computed check sum."

What can be the reason of causing such an error ? Can anyone please help me how can fix this error ?

This error can occur if any one(of the two) or both the following conditions are true -

1. A damaged file exists in the folder in which Windows is installed, and this file is not overwritten during Setup. For example, if you receive the error message that references the User32.dll file, the User32.dll file may be damaged.
   
   
2. One or more of the random access memory (RAM) modules that are installed in your computer is faulty, or the RAM configuration is incompatible.

To fix/resolve this, try to Extract a New Copy of the User32.dll File from the Windows XP CD

• Extract a new copy of the User32.dll file from the Windows XP CD to the drive:\Windows\System32 folder on your hard disk, where drive is the drive on which Windows is installed.
  
  
• Insert a Microsoft Windows Millennium Edition (Me) or Microsoft Windows 98 Startup disk into your computer, and then restart the computer.
  
  
• When the Windows Startup menu appears, use the ARROW keys to select Start Computer with CD-ROM Support, and then press ENTER.
  
  
• Make a note of the drive letter of your CD-ROM drive.
  
  
• Rename the User32.dll file to User32.old. To do so, type the following lines at the command prompt, pressing ENTER after each line, where Drive is the drive on which Windows is installed:
  Drive:
  cd windows\system32
  ren user32.dll user32.old
  
  
• Insert the Windows XP CD into your CD-ROM or DVD-ROM drive.
  
  
• Extract a new copy of the User32.dll file from the Windows XP CD to the Windows\System32 folder on your hard disk. To do so, type the following lines at a command prompt, pressing ENTER after each line, where CDROMDrive is the drive letter of the CD-ROM or DVD-ROM drive that contains the Windows XP CD-ROM, and Drive is the drive on which Windows is installed:
  a:
  extract CDROMDrive:\i386\user32.dl_ Drive:\windows\system32\user32.dll
  
  For example, if your CD-ROM is drive E and Windows is installed on drive C, type extract e:\i386\user32.dl_ c:\windows\system32\user32.dll, and then press ENTER.
  
  
• Remove the Windows 98 or Windows Millennium Edition startup disk from your computer, and then restart the computer.

You can remove or replace the faulty RAM or try to install Windows to a different folder