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Start-up problem-- 0251 System CMOS checksum bad

Last response: in Windows Vista
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May 16, 2012 3:21:51 PM

I am getting the message "system CMOS checksum bad" Cannot connect to internet, and my computer keeps shutting down and I have to reset the network adapter. Can I fix this?
May 16, 2012 6:28:19 PM

You could try resetting the BIOS, there may be a jumper on your motherboard to accomplish this or you could pull the battery off the board. It looks like an oversized watch battery, carefully remove it with the computer powered down and unplugged. Then hold in the power button for about 10 seconds and put the battery back in.

When you turn the computer on press F2 (It might be different but it should say press X button to enter setup or BIOS) Set the date and time and see if that helps.
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