If you have changed the system setup by mistake, you can restore the system default settings.
After opening the system setup screen, click the [Save & Exit] button.
When the [Exit] menu appears, click [Load Setup defaults].
When the following message appears, click [Yes]. The settings will be reset to the factory default.
To save the changes in system setup, press [F10].
When the following message appears, click [YES]. The PC will restart.
You may press [F9] to use the [Load Setup defaults] menu.