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67 Posts
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2018
Vostro 420, CMOS Checksum error
Hello, everyone I need your advise.
Every Time I unplug my computer Dell Vostro 420 I got CMOS checksum error this happen after I clean up the computer using clean air from air compressor.
I've replaced the battery by a new one but still the same issue.
I bought another battery package and I've replace the battery 3 times but still the same issue.
JOcean
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9 Legend
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12.2K Posts
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November 27th, 2018 06:00
It may not be the CMOS battery as the following post describes. If you used an air compressor, that is quite a bit of pressure. Is it possible that the BIOS chip is loose or damaged or the battery contacts are slightly bent? This error can also be caused by a problem with the motherboard. Also not sure how long you left the battery out of the socket. Leave the battery out for at least 15 minutes (Intel recommends 30 minutes).
https://www.dell.com/community/Desktops-General-Read-Only/Cmos-checksum-error/td-p/1734997
https://answers.yahoo.com/question/index?qid=20130304124811AAkPzU1&guccounter=1
http://www.l3jane.net/doc/vostro220mt/trouble.htm