1/ Place your Windows XP CD into your CD-ROM and Reboot your PC
2/ XP's setup program will automatically start and files will be loaded to memory
3/When you reach the Welcome to Setup screen choose the Repair option by pressing R
4/ This will open the Recovery Console
4/ The list of Windows installations will appear
5/ As you only have one installation on your PC you need to press the number which is relevant to your installations location. This, obviously will typically be 1
6/ You now need to enter your Administrator password to gain access. If you are using Windows XP Home edition the administrator password is blank by default so simply press Enter
7/ At the command prompt change to the drive letter that contains your CD
8/ Next type: cd i386
9/ The directory should now change to the i386 directory
10/At the command prompt you now need to type: expand ntkrnlmp.ex_C:\Windows\System32\ntoskrnl.exe
11/The relevant file should now be expanded and copies to the windows\system32 directory of your C:\ drive
12/ Finally, remove the Windows XP cd from your CD-ROM and, at the command prompt type: Exit
If will not work then
Repair XP by install over the top of existing systm
1. Boot the computer using the XP CD. You may need to change the boot order in the system BIOS so the CD boots before the hard drive. Check your system documentation for steps to access the BIOS and change the boot order.
2. When you see the "Welcome To Setup" screen, you will see This portion of the Setup program prepares Microsoft Windows XP to run on your computer:
To setup Windows XP now, press ENTER.
To repair a Windows XP installation using Recovery Console, press R.
To quit Setup without installing Windows XP, press F3.
3. Press Enter to start the Windows Setup.
To setup Windows XP now and Repair Install , press ENTER.
DO NOT choose "To repair a Windows XP installation using the Recovery Console, press R", (you Do Not want to load Recovery Console).
4. Accept the License Agreement and Windows will search for existing Windows installations.
5. Select the XP installation you want to repair from the list and press R to start the repair.
6. Setup will copy the necessary files to the hard drive and reboot.
Do not press any key to boot from CD when the message appears.
Setup will continue as if it were doing a clean install, but your applications and settings will remain intact.