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I have an Asrock Z77-EXTREME4-M motherboard and use Windows 8 retail. The system clock is always wrong on boot and it seems to be off by however long it was since last boot. I.e. if I turn the computer off all weekend, the time on boot will be Friday when I start it up on Monday, Windows Time Service will not resync because the time-difference is so great. My guess is the BIOS is not keeping time.

How do I resolve this problem? The motherboard is so new I'm wondering if it could really be a CMOS battery issue?

Thanks

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    You should check your jumpers and see what your manual says they should be set to. If your Reset-CMOS or similar jumper is turned on, then the BIOS will be reset every time you boot.
    – Caleb Jares
    Commented Oct 28, 2012 at 21:40
  • By any chance are you dual-booting with Mac OSX? This will solve your problem: prasys.info/2010/01/fixing-time-sync-issue-with-osxwindows hint: try the registry fix
    – user170156
    Commented Nov 4, 2012 at 23:25

1 Answer 1

Reset to default
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Try the following suggestions:

  1. Replace the CMOS battery. It can be defective even if it new.
  2. Check the motherboard manual and jumpers position.
  3. Try a different OS and check whether the problem persists.
  4. Reset the BIOS settings to default.
  5. Remove and reinsert the CMOS battery.
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