Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
How to back up and restore the registry in Windows
Note If the 30-day activation window has ended, you
can start the computer in Safe mode to complete these steps.
To resolve this issue, follow these steps:
Restart your computer, press F8 during startup, and then
on the Windows Advanced Options menu, choose Enable VGA Mode. Start the WPA Wizard, and then try to start Windows XP
again. If you can start Windows XP, skip the remaining steps. If you
cannot start Windows XP, continue to the next step.
Right-click My Computer, click Properties, click the Hardware tab, and then click Device Manager. Right-click your video adapter, and then click Disable to make your computer start by using the Standard VGA video
driver. Restart your computer, start the WPA Wizard, and then try to start
Windows XP again. If you can start Windows XP, skip the remaining
steps. If you cannot start Windows XP, continue to the next
Locate the following registry key and its associated values: