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Bios reset at boot

By Ringding
Oct 18, 2008
  1. I had a problem with 1 of my hard drives and i read somewhere that reseting the bios was the answser. After reseting the hard drive worked again but everytime I turn the power off the mobo the bios resets. Ive tried a new batery and the jumper is in the correct position. Any ideas?
     
  2. kimsland

    kimsland Ex-TechSpotter Posts: 14,524

    I bought a CMOS battery once, and it was flat !

    You could try another battery. Or possibly clean (scrape with small flat screwdriver) the contacts where the CMOS battery fits into.

    Also re-confirm that the CMOS jumper, is not jumpered at all
     
  3. Ringding

    Ringding TS Rookie Topic Starter

    The battery is fine ive cleaned the contacts checked the jumper and reset the bois again. It still has the same problem.
     
  4. kimsland

    kimsland Ex-TechSpotter Posts: 14,524

    Then the Motherboard must have a broken or dry joint on the CMOS battery area

    You could try Benchtesting the Motherboard and removing all dust (even underneath the board
     
  5. Tmagic650

    Tmagic650 TS Ambassador Posts: 17,244   +234

    Maybe the replacement battery is dead
     
  6. kimsland

    kimsland Ex-TechSpotter Posts: 14,524

    Covered in Post#2
     
  7. Tmagic650

    Tmagic650 TS Ambassador Posts: 17,244   +234

    "I bought a CMOS battery once, and it was flat !" Flat means dead?
     
  8. kimsland

    kimsland Ex-TechSpotter Posts: 14,524

    ok I won't say "flat" anymore
    I even checked wikipedia and there's no definition on what I meant by flat (maybe my parents used that term (on the car battery) or something :confused:

    I bought a CMOS battery once, and it was dead! (Actually it was just under voltage, they are never exactly zero)
     
  9. Tedster

    Tedster Techspot old timer..... Posts: 6,000   +15

    that's no guarantee the battery is good. Did you test it with a voltmeter?
     
  10. Tmagic650

    Tmagic650 TS Ambassador Posts: 17,244   +234

    Yes Tedster,
    those CR2025's are notorious for being bad right out of the package. I remove them from scrap motherboards and I have a good Fluke multimeter to check them with
     
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