I have Soyo motherboard. When I cut the computer on from the power supply switch I note that the lights blink on the keyboard but the light in the optical mouse does not cut on. The cooling fan appears to not be on but the fan for the processor is running but nothing else seems to happen. The lights blink on the CD drives and the hard drive light comes on. After that point nothing seems to be happening. I am wondering if the power supply is not fully functioning or am I on the wrong track. Software XP Pro. I have tried to get it to boot to a cd drive with my xp pro disk, but this does not happen.