CMOS Check Sum Error

4 posts · originally from https://geek.digit.in/community/threads/cmos-check-sum-error.85160/

My motherboard had a problem for past few weeks and now its working fine after cleaning some dust.

But now whenever I switch on my PC, I get CMOS Check Sum Error and the BIOS settings are restored to default. This is annoying coz I need to change the speed of my ram and date everytime I startup my PC.

I thought there is some prob with the CMOS battery, I replaced it. Yet the prob exists.

Any Solution ?

normally replacing the CMOS battery sud have solved the problem.

may be some connection or something betwn the battery n the motherboard ... try taking the battery off n cleaning the holder with a soft cloth ...

wait for answers frm others ... i m not too sure

Exactly. Either the battery needs replacement or some connection problem between battery & mobo contacts just like iinfi said.

yeah replace da battery.. i too had same prob.