Acer Travelmate P no Bios, Power led shuts of

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  • Craiden
    New Member
    • Aug 2022
    • 3
    • Germany
    #1

    Acer Travelmate P no Bios, Power led shuts of

    Hey all,

    My laptop Acer Travelmate P don't go in the bios. Only the power led is lightning for approx. 5 secs and that's it.
    Bios battery was replaced, didn't help.

    Caps are ok.
    Everything like fan, sdd and more are removed.
    During the “booting” in the bios the powerconsumption with an additional variable power supply at 19V DC the power consumption is around 1,8W. In standby around 0,3W.

    I have measured the powervoltage at KB9022 with an oszilloscope and is fluctuates in the booting +-0,3V.

    The buck converter works on 3,3V and 5V.
    I have fluent 5V power on the USB slots.

    Any ideas what the reason can be, or what should I measure?
    Is there a flow chart from the booting process until Bios from the IC KB9022?
    Thanks for your help
    Tags: None
    • loopster
      Senior Member
      • Sep 2020
      • 76
      • Germany
      #2
      Re: Acer Travelmate P no Bios, Power led shuts of

      Try a Bios recovery via USB stick, press FN+ESC to start the procedure when turning on the laptop: https://www.youtube.com/watch?v=u4-0cALAg64

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