The coin-shaped object on the contrary is the CMOS battery, a Lithium coin cell. This is what powers the aforementioned chip/memory. While storing BIOS/UEFI preferences can be offloaded to say ...

Booting issues are one of the possible symptoms of CMOS battery failure. That’s why we suggest you check the voltage of your CMOS battery. To do this, you need a digital multimeter.

Most mobos use a standard watch battery #CR-2032 and they can be found for $1.00 each in lots of 10 at some websites.<BR><BR>For that price, who really cares if a battery lasts 2 years or 5 years ...

If Virtualization keeps turning off, we need to check the state of VT-d and VT-x, ensure CMOS battery is fine, and execute these solutions.

Modern MoBo's have the CMOS memory powered 24/7 - system on or off - by the battery. First symptom of failing CMOS battery is loss of accurate time.