[Motherboard] How to replace CMOS battery on motherboard when it runs out power ?
1. Find the location of CMOS battery on motherboard, appearance is as below image.

2. There is a latch used to secure battery on CMOS battery holder

3. You can press the latch down by screwdriver

4. Battery automatically pops up when the latch gets loose

5. Remove the battery and replace with a new one.
*Battery model:CR2032 3V Li-ion battery