Hi, my pc has just turned off and wont turn back on,i have checked everything and everything seems fine, the 24pin connector is fully down, but when I put the 24pin connector 1\3 of the way in it comes on but when i put it fully down it goes off, now i have tried different mobos and other psu's and it does exactly the same, i have done the paper clip trick to check the psu and its all fine. I just don't understand why its doing it with a different mobo and psu. Could anyone please help? T.I.A