Asus Accessories | Spare Parts and Accessories for Asus Products

Why doesn't my ASUS computer turn on?

The ASUS Accessories team would like to help you figure out why your PC is not turning on.

Troubleshooting varies according to the type of PC you have. We have separated our guidance into two sections:
  • Desktop
  • Laptop
Desktop PC trouble shooting

There are several reasons why a PC doesn’t turn on. We will go through some steps that may help you determine the cause and hopefully provide a solution.

Is my computer getting power?

The case fan located in the back is spinning or you can hear it means that you are definitely getting power.If the fan is not turning on, you should check the following:

desktop pc fan box

  • Power cord connection issues. It seems simple but sometimes these can get loose from the computer or the wall outlet. CHECK BOTH

    Power cord connection issues

  • CONNECTIONS. Make sure they are fully plugged in and not loose.
  • If you are using a surge protector, power strip, extension cord, etc. You should plug the computer directly into the outlet to ensure that the issue is not with the surge protector or other intermediary connector.

    surge protector - extension cord - power strip

  • If the above show no improvement, you will need to verify that the outlet is providing power. The simplest way is to plug a light or other electrical device into the plug. No need for a AC voltage meter. Note: careful that you are not testing with a device that works on batteries when unplugged (we add this because apparently this is a common occurrence).

    If you have just installed new hardware

  • If you have just installed new hardware, we strongly recommend that you disconnect this device and see if the computer turns on. If it does, you should remove the new hardware and enquire as to the compatibility with your device with the manufacturer. Often they will provide support and troubleshooting measures to help through the installation.
If you haven’t resolved the issue at this point we have to assume that something is wrong with one of the following:
  • Bad power cable – you can try a new one. Please note this is only valid for Desktop cables. These are straight cables with no adapters between your computer and the wall outlet. Your monitor may have the same type of cable (check if connectors are the same), you can use this cable to test.
  • Power supply button – the power supply is a large block located in the back and sometimes has a power button. Please check that this button is still in the on position.
    • If you have just replaced the power supply, please make sure that it meets the power requirements of your Motherboard, processor, and videocard.
  • Loosely connected hardware – this usually occurs when you have replaced a component. The computer will begin to post and stop. Unplug the computer before opening and double check connections. Check that all of the cards (RAM, Video, …) are completely inserted (seated) and that all cable connections are tight. You may want to unplug/unseat and replug/reseat to ensure a good connection.

    motherboard connections

  • Verify the power button cable is correctly connected to the motherboard.
If nothing above seems to have solved the issue, you most likely have an issue with the power supply or a hardware component. If you plan on repairing the computer yourself, we recommend that you

Consider replacing the following parts:

  • The power supply
  • The power button cable (connected to the motherboard)
  • Other parts that could be causing the issue are the Motherboard, the processor and the video card.

You can find the parts you need at and If you need our assistance to find the correct part contact us at

laptop pc trouble shooting

Before starting any diagnostic procedure, you should disconnect all peripherals (thumb drive, external hard drives, ssd’s, monitors, mouse, etc.).
  • Connect the power cable – the issue could simply be a bad battery
    • In some cases the laptop is stuck in protective state that will require you to remove the battery, unplug , and wait for a minute or so. Then replace the battery and plug into the outlet before turning the Laptop on.

      wrong battery

  • Disconnect from the docking station – plug your laptop in directly
  • Drain the battery and residual power

    unplug your docking station

  • Disconnect the AC adapter and remove the battery.
  • Hold down the power button for thirty seconds
  • Without replacing the battery, plug the AC adapter back into the laptop.
  • Press the power button to turn on your laptop.
  • If the laptop powers on, shut down through windows (normally).
  • Once the laptop is off replace the battery.
  • Power on the computer to check that it powers up correctly.
  • If this doesn’t work, repeat and at step 2 hold the power button down for 1 minute.

    wrong adapter

If your laptop powers ups, you will be able to verify if your battery is holding a charge. If the battery life is very short even when fully charged this is indicates that your battery needs to be replaced.

Bad hardware

If the above doesn’t resolve the issue you most likely have a hardware issue. This can be due to an issue with the Motherboard or processor in which case you should have your laptop serviced by a professional. Most likely, however, it is due to a component part.
  • The connector where the adapter plugs into your computer can with time become loose or damaged. If this is the case, your laptop will not charge properly and shut down when the battery is drained. This part can be replaced.

    power connector pin brocken

  • The on/off button can also no longer be functioning correctly. This issue usually develops overtime. You get an unreliable start…the button only works sometimes or after a few attempts.
NOTE: Most other component issues not mentioned here will not impede the computer from powering up but may not allow it to boot properly.

You can find the parts you need at and If you need our assistance to find the correct part contact us at
News added at : March 25, 2020 at 09:41 AM
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