Clearing the CMOS battery resets all BIOS settings to their defaults. If your laptop is not starting due to a misconfigured BIOS setting, then resetting BIOS to its default values will fix the issue.

Now, remove the CMOS battery. It is a small silver coin-shaped battery. After removing the battery, wait for a few minutes and put the battery back in its place.

If you're getting errors when you boot your PC, the problem may be nothing more than a dead CMOS battery. Fortunately, they're cheap and easy to replace--on desktops, anyway.

In theory, a dead CMOS battery shouldn’t prevent your PC from booting, it should mainly just mess with the time. In practice, we’ve seen it be the culprit.

I've been having problems with my new PC (see this post for details for some time now, and I'm now occasionally getting CMOS checksum errors. From searches in the foums here, its seems that ...

I need to replace the CMOS battery in my ancient Toshiba laptop and haven't been able to find one anywhere. The laptop is a Satellite C655. Thanks for any help-- JT in AZ ...

Set the cover aside and place the open PC in an well-lit area. Locate the round silver battery that powers the CMOS chip on the motherboard.

How to Check the Battery Level of the BIOS. If you have owned your computer for a few years, you may notice certain problems, such as it may no longer remember the current time and date, certain ...

The adhesive can be easily removed and replaced, but it’s not as simple as the magnetic attachment that was used in the Intel-based iMac. iFixit gave the M1 iMac a repairability score of 2 out ...