i just built this system a few days ago, gigabyte socket 775motherboard, P4, nvidia 6800GT. It ran fine the first 2 days but now whenever i do alot with it i get a blue screen that say IRQL not less or equal, and upon reboot windows error report takes me to a Graphics driver error screen. I updated everything on my mobo, ethernet adapters, chipset and also the graphics driver, still having the same problem, im not sure what to do. I did some searches but none of the fixes from microsoft helped me. I get the screen about 20-30 minutes into it, recently it rebooted then kept rebooting and wouldnt load windows so i took out one chip of ram and now it boots all the way. Here is a picture of my IRQ list, should i change anything? if so how, id appreciate any help, thanks.