Here are three different ways to clear the CMOS memory on your motherboard. Clearing CMOS will reset the BIOS settings to their factory default levels.
How To Clear CMOS On Your Motherboard?
Windows 10 Help Forums
Windows 10 Help Forums
How to reseat or replace CMOS battery
Windows 10 Help Forums
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How to Clear Your Computer's CMOS to Reset BIOS Settings
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Reset your BIOS settings / Clear CMOS
How To Clear CMOS On Your Motherboard?