How can I clear the RTC RAM data of the system setup?
To clear CMOS RTC RAM data, turn off the computer and unplug the power cord, then short two pins with a metal object like a screwdriver. Reconnect power and enter BIOS Setup to reenter settings. If this does not work, remove the onboard battery and try again. After clearing CMOS, reinstall the battery if removed. (Page 14)
From the official ASUS Prime B660 Plus D4 Motherboard manual, page 14
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