Question about HP Pavilion a340n (DQ099AABA) PC Desktop

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Date/time defauting to Dec 2000

Whenever I log on after the computer has been turned off, the date defaults to December 2000. It appears to be a millenium issue. I have tried the setting to ON for "Automatically synchronize with an internet time server" and also tried with that unchecked..........neither solves the problem. The machine seems to run slower until I correct the time/date to current. What should I try?

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  • Richard Matzke Aug 11, 2007

    Changing the battery was my second option, did not have to go there. From, an easier solution that I thought I would try was to remove and reinstall Realtime clock. Did that and it was solved.

    Thanks to all.

  • Richard Matzke Aug 12, 2007

    Follow up comment: The clock worked the first time that I started my computer from being off. But the next time that I powered it up, it went back to the December 2000 date.

    I will try updating my BIOS or changing the battery on the mother board.

  • Larrinel Nov 22, 2007

    Clock keeps changing from correct time to incorrect time



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It may be of the defective CMOS battery inside the CPU.
Change the battery and set the time once and restart the system.

Let me know if your problem is solved and rate me as FIXYA!

Posted on Apr 15, 2008


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I think its the CMOS battery problem
1. Remove the top or side cover of the CPU
2. Look into the mother board.  You can see a CMOS battery which is upto size of 50np.
3.  Remove it carefully and replace the same

Let me know if your problem is solved and rate me as FIXYA!

Posted on Mar 29, 2008


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The bios battery could have been drained up. Replacing the battery is the only solution. Remove the side cover of your computer, on the motherboard you can see a silver color round shaped object, thats the battery. Remove it, you may have to use a screw driver to pull it out. Note the code written on the battery and purchase a same one. Put the new battery on the motherboard. Make sure that the +ve discharge should come on the top.

Posted on Jul 26, 2007

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Change the "battery" on the mother board. Sounds like it's weak and there's not enough voltage to maintain the BIOS memory.

Posted on Jul 14, 2007

  • Anonymous Jul 18, 2007

    Here's more info for you.

    Also see if you have the latest BIOS version.

    Good luck


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