When i start my pc up its switches back off ??

it starts up and switches back off , gose on and on .??
3 answers Last reply
More about when start switches back
  1. Bad PSU more than likely, unless you have another failed component keeping it from posting.
  2. More likely it is the power supply, but you should also check that the CPU fan is running and that the heatsink is fixed securely.
  3. You may also have a fine PSU and just not enough power from it to power components, give us some specs of the psu and computer.
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