Take out the mobo battery (small watch battery) for about 1 minute. make sure the cable is out of the back of the PSU, and it's shut off, making sure there is no juice... at least 1 minute... i know most ppl think it only takes a split second, but i've seen it need literally more than 30 seconds of no juice to clear.. quite odd i thought... guess it has to do with capacitance... but anyways, make sure you leave it out for like a min, and then put it back in. that should clear it.