You install Windows 8 on a desktop computer. You create a system image and then install third-party desktop
apps and create personal data. You disable the creation of restore points. The computer is not running
optimally. You need to remove the third-party applications and preserve files that are stored in your
Documents folder. You start the computer from a system repair disk.
Which troubleshooting option should you use?

A.
Refresh your PC without affecting your files

B.
System Restore

C.
Remove everything and install Windows

D.
System Image Recovery

Explanation:
Basically the Refresh feature allows you to refresh your Windows 8 installation back to a vanilla, brand new
install while preserving all your personal files. Windows 8 also includes a Reset feature which is similar
however resetting your install deletes all personal files so don’t select this unless you want a full system wipe.
This is what happens:
Your files and personalization settings won’t change.
Your PC settings will be changed back to their defaults.
Metro-style apps from the Windows store will be retained.
http://windows.microsoft.com/en-us/windows-8/restore-refresh-reset-pc