PSA: replace your CMOS battery if your rig starts acting crazy

A coin-cell battery powers the real-time clock and CMOS memory When the computer is not plugged into a wall socket, the battery has an estimated life

Replacing CMOS battery in an Optiplex Gently push a very small screw driver into the slot in front of battery casing, in front of the large

cmos battery slot But to answer your question, you generally just unplug the system, switch the CMOS reset jumper, leave the battery out for at least 15 seconds,

warkop slot how to remove cmos battery from motherboard? Turn off your computer and unplug it from the