Have a backup, but data is not usually lost. Keeps the User Profile and makes software install quite easy. (2) Keep Data: Necessary if the operating system damage is extensive. Just the way you had set it up except repaired. (1) Keep Everything: Best if it works and your computer comes back Normally the first method (Keep Everything) is best but you may need to be more aggressive if method 1 does not work. There are 3 ways to proceed, according to the severity of the error. This will launch the Repair and proceed normally. If the Repair will not run as per above, use the Download button to create a USB Windows Installation key,

Windows 10 is running, so click on the Download button (not Upgrade Button) and select Run. If you have Drop Box running, I suggest you exit from Drop Box before doing a repair install I have found the best way to deal with this is to do a Windows 10 Repair Install. When this happens, there is usually an issue with the explorer subsystem or a shell context issue.

Taskbar on windows 10 not working