Motherboard

A motherboard failure on a laptop that is out of warranty would usually mean that… it’s time for a new laptop. The price of a new motherboard is usually higher than the current value of the laptop.

Symptoms:

Plug in the power adaptor and try to start the laptop.

  • Nothing happens.
  • The “ON” light comes on, the fan spins, but nothing on the screen (black) and you can’t hear the HD working after 10-15 sec.
  • The “ON” light comes on, the fan spins, but after a few seconds the light goes off.
  • After pressing the “ON” button the screen stays black and you can hear a quiet high-pitched sound coming from the laptop.

Troubleshooting:

Look for the “lid closed” switch and try pushing it a few times. It’s usually a small switch near the hinges that is pressed when the lid(the screen) is closed. Sometimes these switches get stuck in the “lid closed” position that results in black screen(no backlight) or non-starting laptop. Also some laptops have a magnetic switch (newer Dell’s and most Apple’s), that doesn’t get stuck.

Test the laptop with another power adaptor. Although not common, the adaptor can fail and not supply the needed voltage even if it has a green “power on” light that lights up when you plug it in. Even if you measure the output voltage and it’s OK, the adaptor may have failed and wouldn’t supply that voltage under load (typically 3.5A to 6A). You can use an universal adaptor or go to an independent repair shop and ask them to check it (some shops will try to charge you for “estimate” for doing just that, so ask in advance).

Reset the RAM. See the article on RAM failures for instructions.

Remove the hard drive and the CD/DVD if it’s easily removable.

Finally try to start the laptop again with only the power adaptor plugged in and with the RAM reset and all removable components and the battery out. If there’s still nothing on the screen, you will need to bring it to a repair shop.

173 thoughts on “Motherboard”

  1. I sent Hp my notebook in 4 warranty work & it says they replaced my motherboard, but when I turned it on everything was the same nothing has changed. Wouldn’t if the motherboard replaced none of my old information wouldn’t be there would it? Please email me Ur responses

  2. Plug in the power adaptor and try to start the laptop.

    Nothing happens.
    The “ON” light comes on, the fan spins, but nothing on the screen (black) and you can’t hear the HD working after 10-15 sec.
    The “ON” light comes on, the fan spins, but after a few seconds the light goes off.
    After pressing the “ON” button the screen stays black and you can hear a quiet high-pitched sound coming from the laptop.after many time they start and work
    what is the problem in my laptop.. no baterry in my laptop

    same problem in my laptop
    what can i do…

  3. i picked up my daughter and her lap top toshiba satellite L755 her mom gave me the wrong adaptor 24V. Guess what happened?zap. Is there a fusble Link at the jack inside? Our somewhere inside that I can replace? I would not be uncomfortable taking apart and attempting to fix?

  4. hi, a laptop (emachines) was not booting into windows and i tried taking it apart to check the simos battery.when l reassembly it and tried powering it on ,it does not display but the light comes on and the fan come s on too for few seconds and then goes off.please help me

    1. Remove the battery, disengage d RAM and put it back, then connect it to Power source without d battery and power it on.

  5. Hae guys..my laptop goes off even when my battery still has power.. I don’t know if the problem could be due to battery failure,,what amazes me is that when i plug in the charger,it starts charging from the percentage it was before going off..it doesn’t start at a low battery percentage.

  6. hello.

    i have a dell n series Lappy but, Nothing happens,no any led comes on and lappy dos not on …..
    give me some Troubleshooting tips for my lappy………..

  7. hie guys, i have a new acer E1 -530 laptop but it has been a month now since screen stoped showing anything only the light bulb. what might be the problem? please help

  8. hii friends
    my hp laptop was in good condition
    but whenever i plug in charger it becomes too slow
    i opened and cleaned all motherboard
    but now there is new problem , the fan starts automatically when plug in
    and no display
    plzz help me

  9. I wsas using my acer Aspire E1-531 and suddenly it went off and fail to on again,I have trying to fix the problem……..what do I do to solve this problem??

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