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Thread: PC keeps losing BIOS settings despite replacement CMOS battery...?

  1. #1
    Evil Monkey! MrJim's Avatar
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    PC keeps losing BIOS settings despite replacement CMOS battery...?

    As the title says, my PC keeps losing its BIOS settings when switched-off, despite having bought and installed a new CMOS battery. Does anyone have any advice? I've checked that the new battery is seated properly in the socket, and yes, I remembered to peel off the plastic prior to inserting the new battery

  2. #2
    boop, got your nose stevie lee's Avatar
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    Re: PC keeps losing BIOS settings despite replacement CMOS battery...?

    did you check that nothing is pressing against the BIOS reset switch, or if the BIOS reset jumper is in the correct place?

    could be a faulty battery.

    if its a board with a removable BIOS chip, is it firmly seated in the slot.

    could also be a faulty CPU/Memory - on my PC if the ram isn't in the slot properly (I've got a slightly damaged slot) every time I boot, I get BIOS has reset to defaults, memory speed has changed message.

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    MrJim (12-08-2015)

  4. #3
    Evil Monkey! MrJim's Avatar
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    • MrJim's system
      • Motherboard:
      • Supermicro C9Z390-PGW
      • CPU:
      • Intel 8700K
      • Memory:
      • 32Gb G.skill DDR4 @ 3200Mhz
      • Storage:
      • Samsung 970 Evo Plus 1TB NVMe, Samsung 850 Evo 1TB SATA, Toshiba 3TB SATA HDD
      • Graphics card(s):
      • MSI RTX 2080
      • PSU:
      • Seasonic Prime Ultra Gold 750W
      • Case:
      • Jonsbo UMX4 Black
      • Operating System:
      • Windows 10 Pro
      • Monitor(s):
      • Viewsonic 27" XG2703-GS
      • Internet:
      • 72mb/s fibre

    Re: PC keeps losing BIOS settings despite replacement CMOS battery...?

    Thanks for the quick feedback - I'll check out your suggestions & report back

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