B660 GAMING X AX DDR4 (rev. 1.0) Key Features | Motherboard - GIGABYTE Global
I pressed CMOS button on by accident (instead of power on). What did I reset? Gosh I don't even remember what settings I changed before in bios :( : r/ gigabyte
Clear CMOS using Reset Switch : r/overclocking
How to clear CMOS on a gigabyte motherboard - Quora
How To Clear CMOS On Your Motherboard?
User manual Gigabyte GA-H81M-S1 (English - 34 pages)