My older computer with a MS-7345 motherboard was working fine untill i cut the power off one day and now i cannot find a way to turn it back on. I know the power Supply is working because the small red light indicating the mother board is in standby is turning on, but i can no longer switch it on. I have re hooked the pins to the case power switch and eben unpluged everything and cannot find whats wrong. Thanks in advance for any help.