CMOS stands for Complementary Metal Oxide Semiconductor and despite its size, it does much more than you think. Let’s clarify a few things first. A CMOS chip is vastly different than the CMOS battery ...

When you disconnect your computer’s power supply from the wall, it jumps in to save your BIOS or UEFI settings in your motherboard’s CMOS-RAM (Complementary Metal-Oxide-Semiconductor). But even the ...

I've got a 7 year old Lenovo Thinkpad x230 and my gf has the same year Dell Inspiron. Thinking of replacing the CMOS batteries. They both work just fine after replacing spinning rust with SSDs. The ...

I'm working on an old Dell CPx J PIII for a friends kid's and need to replace the CMOS battery. Any ideas on how and where it needs to be replaced? Thanks.

One of the main culprits behind BIOS issues is the CMOS battery. The battery powers the CMOS memory, which stores BIOS settings. If the battery is drained, the CMOS will not remember the settings, and ...