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  • The power button is a soft connection to the motherboard circuitry. A prolonged press should start the shutdown circuit. Failure to do so likely requires a repair.
    – anon
    Commented Mar 13, 2022 at 23:52
  • @John So, do you think that the button is somehow disconnected? This also means that it won't start even if the battery runs out and I reconnect the charger, right? Is there any possible danger to the computer of letting the battery to run out?
    – ck1987pd
    Commented Mar 14, 2022 at 0:01
  • It could be disconnected or there could be a circuitry error. Either way, you probably need to take it to a local shop.
    – anon
    Commented Mar 14, 2022 at 0:02
  • @John Weirdly the computer now started up after I let the battery to drain to cause a shutdown. No data is lost. I am currently backing everything up. Then, I will try the force shutdown again. Apparently, the button is alright, maybe the circuitry that was supposed to handle the force shutdown is disconnected.
    – ck1987pd
    Commented Mar 14, 2022 at 0:58
  • There definitely appears to be some sort of fault with the button.
    – anon
    Commented Mar 14, 2022 at 1:11