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    January 9, 2019 @ 11:23 am

    Thanks for sharing the excellent post.


  2. Ishan
    July 9, 2019 @ 1:04 pm

    Thanks for sharing this information.


  3. Mike
    January 7, 2021 @ 1:58 am

    Battery change worked. 20 year old desktop.


  4. CJ
    March 20, 2021 @ 10:36 pm

    I've tried multiple batteries on a NEW motherboard, but it still loses time in Windows, but apparently NOT in Linux. Perhaps Linux synchronizes the time upon booting(?)

    I'll check again, but the contacts don't appear to have any problems.


    • Lakonst2013
      March 22, 2021 @ 10:10 am

      Try this: Enter BIOS and set the DATE/TIME. Save and exit BIOS. Power off the PC and remove the power cable for 10 minutes. After that time reconnect power cable and power on the PC. Enter BIOS settings and check if DATE/TIME is OK. If it lost and the battery is new then it's motherboard's problem.


  5. US
    September 22, 2021 @ 5:37 pm

    i have big problem with HP 280 G2 MT Business PC DISKTOP of this type v7Q99EA#BH5 that my OS freezes and date stuck at 9/2/9999 and i cant change it even though I replaced CMOS battery and adjust date on BIOS setting but it change repeatedly when I turn on..


    • Lakonst2013
      September 23, 2021 @ 4:07 pm

      Try the following:
      1. Look at the manual of your computer and check if the CMOS/Password jumper is at right place (pins 1 and 2)
      2. Reset the CMOS/Password to default settings by moving the jumper to pins 2-3 and power on your PC. Then shutdown the PC again and move the jumper back to pins 1-2
      3. Enter in BIOS and change the date/time to current and Seve/Exit from BIOS.
      4. Power off the PC and check if the problem persists.


  6. Slartibartfast
    November 11, 2021 @ 5:06 pm

    I hate to mess around with the motherboard (I'm a coward, I know), if I don't have to. I suspected, however, that I have a CMOS battery which is going bad and needs replacing, and I came here looking to seek advice on my problem – which is a "wrinkle" on your article's advice.

    The "wrinkle" being that the pc will revert back to its manufacture date (2010) sporadically, only. It's been happening for 6 months, perhaps, and in that time there have maybe been a dozen or 2 times that the machine's lost power (or been powered down intentionally). In that time, there's probably been no more than a handful or so times that this reversion's happened.

    Under such circumstances, it makes sense to me that the battery is *starting* to fail, and needs replacement. But – as I say – I am a motherboard coward. So if this in fact does not make sense and/or if there is a different step/test that I should perform before (hypothetically) replacing the battery … then what's the 911?

    Much obliged. And thanks for the article. I was helpful, in any event.


    • Lakonst2013
      November 11, 2021 @ 5:53 pm

      The first step is to replace CMOS battery


  7. Slartibartfast
    November 11, 2021 @ 6:02 pm

    ("𝑰𝒕 was helpful, in any event.", not "I")

    Thanks so much. Very much obliged.


    November 10, 2022 @ 4:36 am

    CMOS also change but issue not resolved no one have the solution for this. :-(


  9. Edo Antripan
    April 21, 2023 @ 6:17 pm

    Thanks for the help.


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