Step 1, Press the power button and press F7 or Delete continuously to enter select boot device menu -> select Enter Setup and press Enter to enter into BIOS Setting menu.
Step 2, Press F3 to load default BIOS Settings .
Step 3, Then go to Save & Exit -> Save Changes and Exit -> Yes to complete this setting. Or press F4 to save and exit.
In addition, quieter 2 can also restore the BIOS with one key.
When the power adapter is not connected, press the restore button between the two HDMIs.