Question This thing always pops up during starup- 'CMOS Checksum Error - defaults loaded' What do i do?

[SawmMawia]

My PC's PSU was a fixed by the technician and i dont know what he did to my pc but he fixed it,but an error called CMOS Checksum error always pops up,i just press enter and i continues to boot and its kinda annoying
What do i do?

 

[Jacozeelie]

Get a new bios batery, 2032 i think. Gently remove the batery and check the number on it. Replace with new one and do a settings check, save and restart