PC Crash on start-up

My PC is crashing about 0.5 sec after i click the power button, lights go on, then turn off immediatly. at first i thought it was a PSU issue, so I got a new PSU but the problem still precisists. I've tried to reset the bios, but it was no use. At this point, I am not sure if it is the motherboard or the CPU. I have a ASUS P6T Deluxe V2 and a Intel core i7 920(LGA1366). I've removed all the components short of the CPU and it still won't boot.

detailed encounter:
click power(either on case or motherboard itself)
lights go on, fans spin (0.5 sec)
power off (occasionally lights would flash back on for a fraction of a second then turn off)

anyone got any idea what it could be? motherboard or CPU or something else?

Thanks guys
6 answers Last reply
More about crash start
  1. sounds like a short. have you disassembled your computer case and cleaned it all out including the motherboard recently?

    otherwise the only other possibilities are
    1) blown cap/dead motherboard
    2) bad ram
    3) dead cpu

    i listed them in order of likelyhood.
  2. ingtar33 said:
    sounds like a short. have you disassembled your computer case and cleaned it all out including the motherboard recently?

    otherwise the only other possibilities are
    1) blown cap/dead motherboard
    2) bad ram
    3) dead cpu

    i listed them in order of likelyhood.


    I have removed ram/GPU/PSU recently when i swapped the PSU. as for ram, i have removed them trying to boot, same issue. also just check for blown caps on the motherboard, didn't spot any.
  3. Do you have warranty? Maybe you should take it in. But it's most likely your processor.
  4. have you cleaned behind your motherboard? or cleaned your motherboard/case for dust?
  5. ingtar33 said:
    have you cleaned behind your motherboard? or cleaned your motherboard/case for dust?



    i have cleaned case for dust regularly, but not behind the motherboard
  6. check it because as i said... this is acting like a short. and dirt/dust can certainly cause this.
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