For the past month or so, my PC has been locking up. I would go to turn on the monitor and I wouldn't get any video. The only thing that I could do was to turn it off and do a cold boot. While it was trying to boot up, it would only go so far as the XP logo screen (with the blue progress bar). Then the screen goes black and nothing else happens. I have to turn it off and do the same thing again. This time, a STOP error displays for half a sec. after the logo screen disappears, and it reboots. Then, a screen comes up and says: "WE apoloGIze for The incONvenienCE, but WIndows DId not STart suCCessfulLY..." (Seriously, that's how it's displayed! Pretty messed up, huh?) It then gives me a list of boot options. Starting normally obviously doesn't work. However, if I pick 1 of the Safe Mode options to log into, I can select Restart from within Safe Mode and it'll reboot and I can logon normally. I don't quite know why I can only logon normally by restarting from within Safe Mode. Windows did go through a Chkdsk on my boot drive and fixed a few errors, but all of this was happening before Chkdsk ran. BTW, I don't know if it matters or not, but after I booted up, I noticed this error in the Event Viewer: "The driver nv4_disp for the display device \Device\Video0 got stuck in an infinite loop. ..." That apparently was the reason that XP locked up. I'd greatly appreciate any help!

boot in to safe mode, remove the diplay drivers in device manager, reboot, windows will reload the driver properly. if not, try diff video card