Go back to an earlier build - This option allows you to go back
to an earlier build. Use this option if this build is not working for
Advanced startup - Using this option allows you to perform
other advanced recovery options on your Notebook PC such as:
Using a USB drive, network connection or Windows recovery
DVD to startup your Notebook PC.
Using Troubleshoot to enable any of these advanced
recovery options: System Restore, System Image Recovery,
Startup Repair, Command Prompt, UEFI Firmware Settings,
and Startup Settings.
Performing a recovery option
Refer to the following steps if you want to access and use any of the
available recovery options for your Notebook PC.
Launch Settings and select Update and security.
Notebook PC E-Manual