hi , am building a new system and have ran into a problem . when i switch on the power the comp trys to work fans try and spin but then it goes dead . i using a gigabyte ga-965p-ds4 motherboard and e6600 processor. i tried everything i can think of have reinstalled everything including the processor with arctic silver paste, unplugged all the drives and mouse/keyboard even the monitor. removed one of the ram boards and even all the cables except the 2x4 and 24 pin motherboard power leads and the graphics card power cable but still same problem. am thinking it may be a dodgy psu and my brother got a antec tester he is bringing over tomorrow but i doubt its that (antec 500w) but i really no clue any thoughts or help welcome.