CMOS Bad Checksum

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  1. Posts : 7
    windows 7 64-bit
       #1

    CMOS Bad Checksum


    When I restart my computer it always goes to a screen that says CMOS BAD CHECKSUM then I press F1 to start the computer. I have to update my date and time and then everything seems to work fine. But when I click the arrow on the right side of my toolbar it just shows white spaces and I cant use that area not even the volume. Also Microsoft essentials will not work then recently Windows update stopped working. My computer seems to run slower in general. I don't think its a virus since this all started while my computer wasn't connected to the internet. I also replaced the battery on the motherboard.



    Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.130318-1533)
    Language: English (Regional Setting: English)
    System Manufacturer: eMachines
    System Model: ET1831
    BIOS: Default System BIOS
    Processor: Pentium(R) Dual-Core CPU E5400 @ 2.70GHz (2 CPUs), ~2.7GHz
    Memory: 4096MB RAM
    Available OS Memory: 3840MB RAM
    Page File: 1618MB used, 6058MB available
    Windows Dir: C:\Windows
    DirectX Version: DirectX 11
    DX Setup Parameters: Not found
    User DPI Setting: Using System DPI
    System DPI Setting: 96 DPI (100 percent)
      My Computer


  2. Posts : 9,606
    Win7 Enterprise, Win7 x86 (Ult 7600), Win7 x64 Ult 7600, TechNet RTM on AMD x64 (2.8Ghz)
       #2

    When you say you updated the date & time, was it in Windows or in the Bios setup after replacing the MB battery ?
      My Computer


  3. Posts : 7
    windows 7 64-bit
    Thread Starter
       #3

    I just change the date and time on the clock at the bottom of the screen otherwise most websites will not work.
      My Computer


  4. Posts : 9,606
    Win7 Enterprise, Win7 x86 (Ult 7600), Win7 x64 Ult 7600, TechNet RTM on AMD x64 (2.8Ghz)
       #4

    Then you need to set it correctly to your Date & time zone in the Bios setup, then save it & exit to reboot.
      My Computer


  5. Posts : 7
    windows 7 64-bit
    Thread Starter
       #5

    How do I do that? Sorry I dont know a whole lot about computers.
      My Computer


  6. Posts : 7
    windows 7 64-bit
    Thread Starter
       #6

    Also when I said I have to update my date and time I meant just the clock on the taskbar. Sorry if I wasn't clear.
      My Computer


  7. Posts : 9,606
    Win7 Enterprise, Win7 x86 (Ult 7600), Win7 x64 Ult 7600, TechNet RTM on AMD x64 (2.8Ghz)
       #7

    When you first power on the computer, try tapping the F2 key several times to see if you can get into what is the Bios setup. Then look for a setting that allows you to set the current date & time. Then look for the setting to save & exit.
    Attached Thumbnails Attached Thumbnails CMOS Bad Checksum-bios_std_cmos_features.jpg  
      My Computer


  8. Posts : 7
    windows 7 64-bit
    Thread Starter
       #8

    Ok Ill do that real quick
      My Computer


  9. Posts : 7
    windows 7 64-bit
    Thread Starter
       #9

    k I did that and my clock is keeping the time and also the task bar area is working now. But Microsoft Essentials and Windows update are still not working. When I go to windows update and click check for updates it says "Windows update cannot currently check for updates, because the service is not currently running. You may need to restart your computer." I tried restarting but it still doesn't work.
      My Computer


  10. Posts : 9,606
    Win7 Enterprise, Win7 x86 (Ult 7600), Win7 x64 Ult 7600, TechNet RTM on AMD x64 (2.8Ghz)
       #10

    By the way, Welcome to Seven Forums.

    Ok, we might have the date & time fixed. Did you get the CheckSum error notice when you rebooted ?

    What settings do you have Windows Update set for ? Automatic or Download & notify or let me choose ?
    Attached Thumbnails Attached Thumbnails CMOS Bad Checksum-win_update_settings_me_choose.jpg  
      My Computer


 
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