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After pressing the power button of the laptop, most of the hardware is completely unresponsive.

  • The fan works for a few seconds and stops. It works for a short time before stops again periodically after that. (Low workload?)
  • The backlight of the keyboard doesn't work.
  • The screen shows nothing.
  • Lights on the USB mouse are not lit.
  • After force shutdown by holding the power button, it sometimes restart automatically.

I have tried to blindly input F2+F9+enter+F10+enter to reset the bios and drain residual electricity by holding the power button.

It seems to me a hardware failure. Does the automatic restart imply a short circuit somewhere in the motherboard?

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    Difficult to troubleshoot shorted or blown parts. Take the machine to a local computer shop and have it diagnosed properly.
    – anon
    Commented Nov 27, 2023 at 16:40
  • Problems with the fans at startup usually indicate the power supply.
    – harrymc
    Commented Nov 27, 2023 at 18:05
  • Did you remove the battery and charger, and then press and hold the power button for 30 seconds?
    – Toni
    Commented Nov 27, 2023 at 18:52
  • @Toni Yes, and I also tried removing and installing RAM. Some sources say removing the CMOS battery will help, but I can't find one on the motherboard.
    – m1ssing
    Commented Nov 28, 2023 at 21:00
  • Some laptops don't have a CMOS battery. I think you need to send your machine to a repair shop.
    – Toni
    Commented Nov 29, 2023 at 9:35

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