how to short the cmos/bios jumper acer aspire z5771

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pewful2021
pewful2021 Member Posts: 4 New User
edited September 2023 in All-In-One PCs

Hi, i need to know how to short the bios/cmos on the acer z5771 please help

[Edited the thread to add issue detail]

Answers

  • JackE
    JackE ACE Posts: 44,630 Trailblazer
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    Not recommended if the BIOS is functioning properly.

    Jack E/NJ

  • pewful2021
    pewful2021 Member Posts: 4 New User
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    Hello,
    I want to reset it to see if my problem will be fixed
    Problem : Everything turns on but no beep at all,
    Solutions i have tried
    1. Connecting the power brick to another outlet
    2. Replacing CMOS battery
    3. Connecting to an external monitor (via port in the back and straight from the gt520)
    4. Reconnecting everything (litteraly everything)

    The problem started when i was turning on the thing when suddenly there is a power outage for 10 sec.

    Please just show me how to reset the short the CMOS/BIOS

  • billsey
    billsey ACE Posts: 31,962 Trailblazer
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    The clear CMOS jumper is #20 on this diagram:

    Click on "Like" if you find my answer useful or click on "Yes" if it answers your question.
  • pewful2021
    pewful2021 Member Posts: 4 New User
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    Can you circle the area of the jumper please, because idk the exact location of the jumper.

  • JackE
    JackE ACE Posts: 44,630 Trailblazer
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    2. Replacing CMOS battery

    Just remove the CMOS battery again. Then short its mainboard terminals for about 10 seconds. Did the problem happen suddenly for no apparent reason?

    Jack E/NJ

  • StevenGen
    StevenGen ACE Posts: 10,068 Trailblazer
    edited September 2023
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    Here is the PDF SG section guide to reset the CMOS, also unplug the round bios battery get either a pair of steel tweezers or a paper clip and touch the +&- round bios battery pins and short them out for 5 seconds, as that also resets the CMOS, so do both.

  • pewful2021
    pewful2021 Member Posts: 4 New User
    edited September 2023
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    Which pin I should short ?

  • JackE
    JackE ACE Posts: 44,630 Trailblazer
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    To be safe, just remove the CMOS battery again. Then short its mainboard terminals for about 10 seconds. Did the problem happen suddenly for no apparent reason?

    Jack E/NJ

  • billsey
    billsey ACE Posts: 31,962 Trailblazer
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    The jumper that is closest to that coil is the CMOS reset. You move the jumper from the pins it is on to the other side.

    Click on "Like" if you find my answer useful or click on "Yes" if it answers your question.