Cannot Boot in any mode XP PRO

My McAfee subscription expired Dec.30,2006 and was renewed 2 days later. In that time my computer started acting up, screen going blank, attempting to re-boot on it's own, keyboard not responding, errors in OS starting up fully. I finally was successful in getting a full boot to operate in Safe Mode. While in this mode everything worked perfect other than I could not connect to internet. I checked all hard drives and did complete diagnostics on entire system, everything passed. I then did a complete virus scan and no files showed to be infected. However when I exited and system was booting up again entire screen went blank and after about 30 seconds a blue screen appeared with the following message:

A problem has been detected and windows has been shut down to prevent damage to your computer.
This problem seems to be caused by the following file: nv4_disp
The device driver got stuck in an infinite loop. This usually indicates a problem with the device itself or with the device driver programming the hardware incorrectly.

I'm using my son's computer to post this as mine is "shut down" I don't know what to do next to fix this fileor to start my computer properly. Is this a virus? How do I fix?
thanks.

 

Do the easy stuff first. Try booting to the f8 options menu and choosing the "Last known good configuration. "

If no joy, try using System Restore (hopefully you have it enabled) to return to a point before the trouble began.

 

It is not a virus, but an issue with your display adapter driver.

See:
Error message: STOP 0x000000EA THREAD_STUCK_IN_DEVICE_DRIVER
http://support.microsoft.com/kb/293078

If you google "nv4_disp infinite loop "
You will find yourself in a large group of people with this error.

Try starting in VGA only mode from the extended boot option menu, rather than Safe Mode.

 

Thanks I tried both with no luck.

 

The general consensus is to update your video drivers and if no luck, replace the card. As Bill intimated, it's a long standing problem with no real single answer. Indeed, you have lots of company. Update your video drivers - try another adapter or setting - reduce the acceleration - replace your video card. All things to try.

If you have an image of the drive when it worked fine, I'd even suggest deploying it as a last ditch effort. That would surely eliminate or confirm your hardware.

 

Thanks. I finally logged in under Safe Mode and disabled NVIDIA GeForce fx 5200. System now works fine and I can get online to download new driver. Thanks for your help.