Hi Yvonne,

If a system running Windows 8 doesn’t launch Windows, the system reboots and runs Automatic System Repair. If it is unable to repair the problem, you will be prompted to shut down your computer or click Advanced Options.



You can boot from a Windows USB drive or disc, choose from troubleshooting tools, turn off your computer, or try to restart Windows 8.1 from the Choose an option menu.
Click Troubleshoot to select options to Refresh Your PC, Reset Your PC, or see Advanced Options.

Note: If you want to restore a complete backup (system image) made with a third-party backup program that uses a bootable USB or optical disc, insert that drive or disc, then choose Use a Device, and choose the drive to reboot from.

Use the Advanced Options menu to run System Restore, repair startup files, use Startup settings such as Safe Mode, or change UEFI firmware settings.
If you select Startup Settings from the Advanced menu, you will see the options.

Method 2: Refresh Your PC
Windows 8 introduced Refresh Your PC as a way to solve major problems with your computer without wiping out your information.

1. If you are unable to start your computer or have other major problems with it, choose Refresh Your PC from the Troubleshoot menu.

2. Refresh Your PC removes programs you installed but does not disturb your personal files. After you run it, your system reboots. At that point, you will need to reinstall apps and software you have downloaded from sources other than the Windows Store or installed from optical or USB media (apps you installed from the Windows Store or that were bundled with your computer are not affected).

3. If you want to keep these apps, create a custom refresh image using recimg.exe and start the refresh process with System Image Recovery.
Windows displays a list of removed apps on the Windows Desktop after your system restarts.



I hope this helps.

Regards,
Lokesh