For example, the BIOS of ASUS computer is set to the factory default setting mode (different brands have different menus):
Press Esc when starting the machine, find the default value of loading settings (some BIOS options are: loading optimized default settings) and press enter to confirm. Just restart.
Or press F9 to restore the default values → press F 10 to save and exit the BIOS settings.
You can also remove the button cell from the motherboard and install it later (discharge and clear the cache) to restore the BIOS defaults.
Reference: computer maintenance: [1]BIOS startup settings/article/358570f672b3ce4724fc0.html.