First, Reboot your computer while tapping the F8 Key. At the Advanced Options Menu select
Last Known Good Configuration.
If this doesn't work
You most likely will need to do a repair install of XP.
Disconnect from the internet until you are finished and can run microsoft update. This can be done by going to
www.update.microsoft.com
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.
When you see the
"Welcome To Setup" screen, you will see the options below
- To setup Windows XP now, press ENTER. (PRESS ENTER)
- To repair a Windows XP installation using Recovery Console, press R.(Do NOT press R)
- To quit Setup without installing Windows XP, press F3.
Press Enter to start the Windows Setup.
Accept the License Agreement (F8) and Windows will search for existing Windows installations.
Select the XP installation you want to repair from the list and press R to start the repair. If Repair is not one of the options, END setup.
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.
After the repair install you will have to reinstall updates from Microsoft. Your data will still be intact but the microsoft updates will not.