[Solved] CMOS checksum bad time/date set error

lovelspa

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Feb 11, 2012
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18,510
how to fix :hello: I'm getting a msg, on my windows 7 check date and time settings, default configuration used, system CMOS check sum bad, default configuration used, what can I do?
 
It sounds like either 1) your battery died, or 2)your BIOS is corrupt.

-- You could replace the battery. If that doesn't fix it:
-- You could try resetting it using the clr_cmos jumper, and it that still doesn't fix it, you will have to re-flash the BIOS.