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PC turns on for 1 second then goes off (repeat)

LED and fans turn on but CPU cooler barely spins.
Then turns off
Goes back on.

Don't make me buy any new parts, I just don't have the money
10 answers Last reply Best Answer
More about turns repeat
  1. PSU dead bro.
  2. adimeister said:
    PSU dead bro.


    By the way, we are using an old power cable from 2004.
    I think it's that
    I bought my PSU this year.
  3. Power cable doesn't get much wear and tear bro. It's just a conductor. Even I use my power cord since 2000 something. Anyway, you can try a different power cable.

    By the way even if you have a brand new PSU, you can get unlucky and die on you the first time you boot it.
  4. Is the 4/8 pin power cable connected? If yes and still the same, then try starting the board outside the case, only CPU and CPU fan installed, both 24 and 8 pin power cables connected. What PSU, motherboard?
  5. Perhaps the fan isn't plugged into correct socket on your motherboard. It detects 'no fan' then automatically shuts down. Double check that the fan is plugged into the right spot!
  6. alexoiu said:
    Is the 4/8 pin power cable connected? If yes and still the same, then try starting the board outside the case, only CPU and CPU fan installed, both 24 and 8 pin power cables connected. What PSU, motherboard?


    CX 750
    mobo: ASROCK H71M-DGS
  7. Best answer
    Try testing it outside the case for ruling out a short. Have you used standoffs for installing the board inside the case?
  8. So, I was using an old 250V cord.
    The one that came with it is 125V
    But I cannot use it because it was an American plug.
  9. Turns out I wasn't using standoffs.
    Short circuted :/
    Don't worry, Learnt from my mistakes.
    I got a new Mobo and will remember to put them on
    :D
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