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Computer wont power up

By Nnooooo
Jul 12, 2015
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  1. Old psu blew out so I replaced it but now nothing comes on. I've tried another psu, both 550.

    Power light comes on, the mouse lights up, but no beeps, no fans, no image on the screen.

    Ive changed the motherboard and the processor too. I've also swapped power sockets and power leads.

    I've even changed the case...

    Do I need a priest?
     
  2. jobeard

    jobeard TS Ambassador Posts: 9,311   +617

    "Do I need a priest?" maybe (sorry, just too opportune).
    Have you tried to boot into Safe Mode?
    • boot & strike F8 once / second
    • in B/W vga screen, select Safe mode
    • in colored screen, select Admin and give the password
    • and you land on the Admin desktop
    So, how far do you get?
     
  3. Nnooooo

    Nnooooo TS Rookie Topic Starter

    Not even that far. No image on the screen. Not a sound from the motherboard. It's like it's not plugged in, except there's power getting to the power light on the front and to the usb mouse.
     
  4. Tmagic650

    Tmagic650 TS Ambassador Posts: 17,244   +234

    Assemble the motherboard outside the case with just one stick of memory, CPU and video card if no on-board video is available. See if the computer posts
     
  5. Nnooooo

    Nnooooo TS Rookie Topic Starter

    Do you mean boot?

    I'll give it a go but it's gone from one case to another already.
     
  6. Tmagic650

    Tmagic650 TS Ambassador Posts: 17,244   +234

    No, see if it just begins to boot like showing anything on the monitor. If still nothing, you have a bad part somewhere...
     
  7. Punkid

    Punkid TS Guru Posts: 421

    Do what Tmagic650 said, if that doesnt work, your motherboard's probably fried.

    Also, try just removing the ram and try booting, then plug one ram stick , try different slots and see if it makes any difference
     
  8. Tmagic650

    Tmagic650 TS Ambassador Posts: 17,244   +234

    The motherboard should start beeping with no memory installed. You might have to attach a speaker to the board to hear it
     

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