PC won't boot... power issue or mobo fault

By Dave Rook
Jul 9, 2012
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  1. my PC did not power up when I pressed power button. The motherboard has lights (leds). turning power on at psu lights up leds. pressing power on pc button fires up the fans for < 1 second and then stop, boot process doesnt proceed but lights remain on board.

    So I buy a new psu (another 800 watt). I unplug all but bare essentials on board. same issue. I then take out the 8 pin adapter (so only the 24 pin is connected) and leds remains on and boot up starts (yipee). I then put the 8 pin in again and it fails in the same manner as before.

    Gigabyte GA EP45 DQ6 mobo
    4 hard drives
    2 dvd
    intel q550 ( I think)
    4 x 2 gb RAM
    800 watt psu

    any idea where fault lies? I assume board.
  2. Tmagic650

    Tmagic650 TS Ambassador Posts: 17,244   +234

    ...then go after the motherboard
  3. c3h899

    c3h899 TS Rookie Posts: 37

    Ensure fans are spinning and parts (CPU and Graphics) are not overheating.
  4. Tmagic650

    Tmagic650 TS Ambassador Posts: 17,244   +234

    Any updates on this?

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