A BIOS reset clears and defaults all BIOS Settings, so if you changed the boot order or something else in the BIOS, it will go back to factory default. Also I think fast boot will be disabled. Though if you do not have a reason to do this, don’t!

Is it safe to reset BIOS to default?

It is safe to reset the BIOS to default. … Most often, resetting the BIOS will reset the BIOS to the last saved configuration, or resets your BIOS to the BIOS version that shipped with the PC. Sometimes the latter can cause issues if settings were changed to take account for changes in hardware or OS after install.

What happens if I reset BIOS to factory settings?

What is the BIOS, and what happens when the BIOS configuration is reset to the default values? … Resetting the BIOS configuration to the default values may require the settings for any added hardware devices to be reconfigured but will not affect the data stored on the computer.