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E5-575-320P how reset BIOS in w10 can't change settings; ALL greyed out.

Member Posts: 68 Die Hard WiFi Icon
edited July 2023 in Aspire Laptops

BIOS 1.47 is active, but can't change settings; ALL greyed out. Tried to flash the BIOS again with ZAA_147.exe. Removed CMOS for 12 hours. Tried F2/F9/F10. All to no effect.
How reset BIOS???

[Edited the thread to add issue detail]

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Answers

  • ACE, Member Posts: 15,164 Trailblazer

    Not just remove the CMOS coin battery but after taking out the CMOS battery, shorten (connect) the +/- contacts (electrodes) inside the CMOS capsule with a short electrical wire or bended paperclip for a second and put the coin battery back in with the + sign up. Was the flashing successful, can you enter BIOS with F2? Pressing F9 in BIOS should have reset BIOS to factory defaults.

    If none of this helps you may have a HW issue (drives or DDR4 modules). I suggest bringing your laptop to Acer Services in your country to reset BIOS or reprogram the EEPROM and return the system to factory defaults.

  • Member Posts: 68 Die Hard WiFi Icon

    hmmm seems i'm blowing up the mobo with that procedure…

  • ACE, Member Posts: 15,164 Trailblazer

    Always disconnect the adapter and the main battery before touching anything inside your laptop. I suggest bringing the laptop to Acer Services in your country the check the MOBO.

  • Member Posts: 68 Die Hard WiFi Icon

    "Always disconnect …and the main battery"

    Well you didn't mention this in your previous post!

    So when there is no power left how could any 'short circuit' take place?

  • ACE, Member Posts: 15,164 Trailblazer

    Common sense, whenever you work on electrical appliances you disconnect the power supply for personal safety and damage. Connecting two poles is called a "Short" or "Shorten", if there is any residual current on the MOBO that procedure will drain it and is described in many posts on this forum to reset the BIOS. Common procedure when working on power supplies is to shorten the electrodes of capacitors before you start repairs.
    Hopefully the MOBO is not damaged, can you still boot to BIOS?

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