I am woking on this P4 machine with Aopen MX4LR motherboard. The machine cannot boot, the power supply fan is not spinning and I can only see a red light on the motherboard. I have proven that the power supply is ok and working fine when I tested it on another similar PC. When I reinstall it back to this P4 Machine the same problem occured.
-No power
-Fan not spinning
-red light on the motherboard.
Need help ASAP
