Earlier today I my computer was going fine. I have a 3.0 GHz Intel Chip with a Biostar Mobo, and an nVidia GeForce MX 400 i think. I am also running Windows XP Pro SP2! (or at least trying to)! I switched out my video card earlier today with one of my other computers (linux server) to try and reinstall linux on that computer. Then, when i put the card back into my original computer it would boot up and then when it got the Windows XP loading screen, it would start to load and then the screen would go black and the monitor would say... "No Signal". It kept doing this so i thought that maybe i got a virus or something. So... I reinstalled windows and it gets about a 1/4 of the way through the install and then it happens: THE BSOD!!!!!!. A problem has been dectected and windows has been shut down to prevent damage to your computer. It says DRIVER_IRQL_NOT_LESS_OR_EQUAL Technical Information: *** STOP: 0x000000D1 (0x00000000, 0x00000002, 0x00000008, 0x00000000) Beginning dump of physical memory Contact your system administrator or technical support group for further assistance. If anyone can help... it would be greatly appreciated.