I recently installed an EVGA Nvidia e-GeForce 8800 GTX in an HP a1640n running Windows XP Pro 32-bit SP3 with a 600W 80+ power supply. It gave me the performance benefit I was looking for, so I'm enjoying it so far in that aspect.
However, there is a serious issue: the screen will turn black for a second before returning to normal. Sometimes, it keeps flashing to black so often and so badly that I have to hit Alt-F4 to quit whatever program I'm using and open the program again (which at that point it will usually run fine). This isn't happening just with games. I opened Recycling Bin and it started flashing to black constantly, so I had to close it and open it again to make it run properly.
I'm pretty sure that this isn't an application- or game-specific issue. It is likely either a hardware issue or a driver issue. I probably should've uninstalled my integrated graphics drivers before I installed the card. Should I uninstall the Nvidia drivers, uninstall the card, uninstall the integrated graphics drivers (Intel GMA X3000), and then install the card and Nvidia drivers again? Or is this a hardware/compatibility issue and I'm better off returning the card? Does the fact that I'm using a DVI-D to VGA cable have anything to do with it?