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Released in October 2019, 10th gen Intel, 15" Product code: 9GQ29PA

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Pressing power button turns on keyboard light but nothing else happens

When I press the power button on my laptop, the keyboard backlights will enter a loop, where they turn on and off repeatedly, but nothing else happens. There is no image on screen, no boot messages - nothing.

When I try to power it off, it does not turn off.

Instead I let the laptop die once. After letting it die, I turned it on, and then only the caps lock dot light turns on and the laptop turns off.

Afterwards I plugged in my charger, then turned the laptop on, but it entered the loop again.

Any troubleshooting help works and will be greatly appreciated.

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Hi @saltyc

Try the following in case it is a corrupted BIOS that is causing the problem.

  • Disconnect the charger (if connected) and open the laptop and remove the main battery from the laptop
  • Next disconnect the RTC (Real Time Clock) battery from the motherboard. Here's the maintenance and service guide for the laptop. Go to p.36 and p.58 to view the procedure to disconnect the main battery and the RTC battery respectively. Note: If you have a DMM (digital multimeter) measure the RTC battery voltage once you have disconnected and removed it from the laptop. If it is <2.5VDC replace it. Search online for L02772-001 to get results for suppliers that suit you best
  • Press and hold the laptop's Power On button for a full 30 seconds and then release it. Doing this will cause the BIOS settings to restore back to their factory default settings.
  • Reconnect the RTC battery to the motherboard, reconnect the main battery and reassemble the laptop, connect the charger and try starting the laptop.

Sometimes when the laptop is turned on again after having done the reset, there may be a message saying that the date and time are incorrect. This is normal as the BIOS has been reset. Once you correct the date and time the message won't appear the next time it is started. Also if you have changed any user definable settings in BIOS to suit your particular operating requirements they will have to be changed again to what you had as they will be reset back to their default setting.

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salt さん、ありがとうございました!
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