I have a cheap raidmax 700 watt power supply, I left my computer running when I went to work. When I came home the tower was off, wouldn't start for a damn. I took the psu out and shorted pins 14 and 15 to force it on and it turns on, so i believe the power supply is still working and it still wouldn't work with all components out of it, I also tested the power supply with a volt meter and all pins excepts the coms where putting out voltage. Two questions, number one I believe it is the motherboard I need to replace. number two, should I invest in a better power supply and get a better one this is the 2nd motherboard that has died on me in over 2 years granted same model rma'd the other one out. The motherboard is a msi-7501. Is this possible a cheap power supply could be putting out wrong voltages to fry my components?