I plugged a din cord from a creative inspire 5500 into my mouse keyboard port today and my pc shut off instantly and won't turn on at all. No signs of life, nothing. I don't know why I did but it was a last ditch effort to get the speakers to work correctly My mother board is a as rock z77 extreme6 and my psu is a cooler master silent pro gold 800w. My pc has been working fine since Christmas. No other recent updates or changes and all drivers and bios were up to date. Power is definatly connected as other devices in the same box were on and the power on off switch is definatly on. Is there's any reset I can do to make it work or something. Like a iPhone reset. How can I test if the power is on Past the cord. Or see if the mobo is dead. Any help please.