If you need to test a PSU that is not plugged into your motherboard, take a paperclip and unfold it. Now touch one end to the green wire on the mobo 24pin and the other end to a black wire. It should turn on. Now you can test your PSU for basic on/off, or you can plug in fans or other components to test them.
If you really don't understand, WATCH A VIDEO:
http://www.youtube.com/results?search_query=psu+paperclip+test
PM Blackbird if you still don't get it. Don't PM me!!!
If you really don't understand, WATCH A VIDEO:
http://www.youtube.com/results?search_query=psu+paperclip+test
PM Blackbird if you still don't get it. Don't PM me!!!