OK, I just got a 600w power supply so I can use my new GeForce 8800 GT. However, when I proceed to do anything graphically, I receive a BLUE screen of death. There is an error message but it disappears too quickly to read it. I was using onboard graphics (ATI x1200) before this card, and the computer ran fine (albeit slower, FPS wise). I installed the card properly, as far as I know. I first uninstalled the ATI drivers via Device Manager. I then ran Driver Cleaner Pro (for ATI drivers). I then shut off the PC, turned the switch to OFF, and unplugged it. I then put the 8800 into the PCI-E 16x slot. I connected the PCI-E power cord. I then turned the computer back on. I then installed the driver 180.48 from NVidia's website. I made sure to get the 64 bit version, as I run Win XP 64-bit. I don't think it has to do with my RAM as I have tried using this card before, and when I took it out I could watch video and play games fine. crappy OEM comptuers...

"I just got a 600w power supply" Once again, that info is meaningless. What is the make/model? What are the amperage specs, primarily the +12v rail(s)?

Coolmax V-600 +5v 24a +3.3v 24a +12v1 18a +12v2 18a +12v3 15a -12v .5a +5vsb 2.5a +3.3v & +5v max 160w +12v 1-3 max 450w crappy OEM comptuers...

Not a great choice but it *should* be adequate if you balance the load properly. "I first uninstalled the ATI drivers via Device Manager" Actually, you should've uninstalled the drivers using Control Panel > Add/Remove. Then you should've rebooted & checked the BIOS to see if there's a setting to disable the onboard or change the "shared memory" setting to zero. It would help to know the blue screen error message. Did you disable "automatically restart"? http://pcsupport.about.com/b/2007/0...

Thanks for that system restart tip. Here is the error message: The driver is mismanaging system PTEs. 0x0DA (0x0400, 0xFFFFFADFC1139000, 0x087, 0x0) Time to google... crappy OEM comptuers...