i have just built a new custom computer but it wont work. every thing seems to be pulged in correctly and i usedthe motherbord user manual to make sure of it. nothing works no fas no heatsink no nothing except a little led light on the motherbord that lights up. its a abit Model #: AA8XE-3rd Eye and only a 8 in a yello led shows up when i turn on the psu. but if i hit the power button nothing will turn on. i made sure the cord was pluged into the motherbord show it can turn on. can anyone give me a list of reasons of what it could be?