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Computer turns off then pressed again and turns on fine?

Discussion in 'Hardware' started by ben.d, Dec 21, 2009.

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  1. ben.d

    ben.d Thread Starter

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    My computer turns off then pressed again and turns on fine. This maybe due i went cheap and got a psu with case but i believe it needs to warm up for it to turn on.

    Thanks for the help!
     
  2. Megabite

    Megabite

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    Howdy,

    Do you mean it shuts off while your using it?
     
  3. ben.d

    ben.d Thread Starter

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    no i mean i press the button to turn pc on first it turns on for like a sec and off then i press it again and it runs fine.
     
  4. Megabite

    Megabite

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    Could be the ON/Off/power switch
     
  5. Megabite

    Megabite

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    You can test that theory by using a piece of wire or something to short the power switch so it connects the wires and if it starts up ok then points to the switch
     
  6. win2kpro

    win2kpro

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    Jump a known good power supply to the board and see if that solves the problem. If it were the switch the machine shouldn't start initially.
     
  7. crjdriver

    crjdriver Moderator

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    Cold boot problems that go away after the first boot are almost always a pw supply problem. What happens is that the pw supply capacitors lose their residual charge when you have the system off for a while. When you attempt to pw ON, the pw supply just cannot supply the required amount of wattage to boot the system. Once it fails the first boot, the caps have some time to recharge and it works the second time.

    Buy a quality pw supply and you should be good to go.
     
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