Let’s clarify a few things first. A CMOS chip is vastly different than the CMOS battery on your motherboard. CMOS is a MOSFET-type technology used for logical operations. In simple terms ...

To view the version of BIOS installed on your computer, you can use the System Information tool. If your laptop battery icon still shows the red cross despite trying the above-mentioned fixes ...

Wait one hour, then reconnect the battery. Put the computer cover back on. Plug the computer and all devices back in. You can now try booting into BIOS – it should complete successfully.

A battery that maintains the time, date, hard disk and other configuration settings in the CMOS memory. CMOS batteries are small and are attached directly to the motherboard. See BIOS setup and ...