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New power supply, but no power

By jalba
May 3, 2017
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  1. HI.

    My PC was not powering up no matter where I plugged it too. No lights, no startup, nothing.

    I bought a new power supply, installed it and the computer turned on good and all was well...till I put it on sleep mode.

    When I woke it up, it turned on for a few seconds, then died. Now it's gone back to the same problem.

    What is the reason for this?

    Jason
     
  2. Cycloid Torus

    Cycloid Torus TS Evangelist Posts: 2,367   +446

    There is no easy answer. The following link gives an orderly approach to finding the problem ( https://www.computerhope.com/issues/ch000312.htm ). The best way is to replace a component with a known good component - the difficulty arises when it is more than one component. If this is suspected the better approach is to do a rebuild starting with the very most basic parts and getting beep codes until a good POST is achieved. This link describes the process ( https://www.computerhope.com/issues/ch000607.htm ).

    Download the manual for your motherboard if you do not have it.
     
  3. jalba

    jalba TS Booster Topic Starter Posts: 161

    So to update...

    I carried the PC to my repairman. He changed the power supply and cleaned the graphics card, and it's now operational.
     

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