I just purchased a new mother board, power supply, processor, and ram chip to upgrade my system. I completed the install, powered the system up and everything seemed to work fine. I began to install Windows ME and after about 10 minutes of run time, the entire system shut down. I tried to restart the system and nothing would happen. I then unplugged the system and let the power on led on the mother board go completely out. I plugged everything back in and tried to power the system up again. The fan on the power supply, case and processor all twitched, but then stopped and nothing else happened.
These are all new components that I purchased online from a reputable retailer. I have built or rebuilt several systems, but this is the first time that I have ENCOUNTERED this problem.

Thanks for your help,
DarrellAre the pieces compatiblke? Is your power supply adiquate to run the motherboard? Have you try to reset your motherboard settings? Remove the battery to reset your COMOSrecheck the cpu.........repaste it.......and then replace the heatsink........This just happened to me. I was in the middle of Age of EMPIRES 3... then it just turned off. The power supply FELT pretty hot. unplugging and re-plugging the power cord caused a fan twitch but it wouldn't boot and well just nothing happens. except the green power light is on in the front. I built this PC last summer. It's been a dream. I just don't know where to start to FIGURE out this shut down. Could it be power? Processor? Motherboard?It could be anything. Heat and motherboard incorrectly installed to where it is shorting out is possible, as is bad power supply, or improperly connected items. Reseat everything.