I have an AOpen AK75 motherboard with AMD 1800 cpu. I am running Windows XP Pro. My computer randomly won't boot up at all, the monitor stays in sleep mode. I can't reset or even turn the power off. The only way to get the system to boot is to remove the power chord from the back, and try again. This can sometimes take 4 or 5 tries. I would like to fix this because I can't really afford a new mother board. Has anyone seen this before? The motherboard was already replaced once (for this same problem) while the PC was still under warrantee but that has now expired. I see positive feedback on this board, but have yet to be impressed. Any help or suggestions would be greatly appreciated. Thanks, Heather