Hi all. I am having this strange problem with my computer at the moment. The computer boots, and the DVD drives light up, alhtough the monitor is not powering up at all... I have switched video cards, monitor's and reset the BIOS by removing the battery. Nothing works. I installed a new CPU, (3.06ghz) and windows didnt want to boot. I tried safe mode and it would hang on Mup.sys I understand that this has somthing to do with the power managment system. I repaired the windows installation from the CD and things were looking up. I would then get random reboots, and blue screens. I managed to geta bout 1/2 hour of the far cry demo in, then it BSOD and claimed that there was a IRQL_NOT_LESS_NOT_LESS_NOT_EQUAL. <--- Something like that anyway What could be causing this? I am thinking that it has something to do with the power sub-system, although I cant imagine that the system would boot, if that was the problem. Please help me with this one guys, Im desperate.