In general, the CMOS jumper is three pins located near the battery. Locate the CMOS jumper by referring to the motherboard manual and how to clear the CMOS. Open up the system so you can see the motherboard. Steps to clear CMOS using the jumper method: The jumper position, time to wait, and location of the jumper are completely dependent on the motherboard. Using a CMOS jumper or a dedicated jumper on the motherboard, generally near the battery. Since are the BIOS got corrupted you can try clearing the CMOS. Be aware that, when having an old BIOS, the update must be done starting from the old one to the new one but without jumping any version in between to avoid corrupted BIOS to avoid corrupted BIOS.
