System restore or reset? they two different things. What was problem causing you to do this?
If reset won't work, what kind of reset were you doing? Keep files and settings or wipe everything? If wipe everything, just do a clean install.. its the same thing and shouldn't fail at 90%. Download the
Windows 10 media creation tool and use it to make a win 10 installer on USB - change boot order in BIOS so USB is first, hdd second, and then follow this:
http://www.tenforums.com/tutorials/1950-windows-10-clean-install.html
If you were keeping files and settings, which are you running the newest version of windows 10? Did you get Anniversary upgrade last month? If not, Go
here and click upgrade now, this will dl an upgrade assistant. Run it and it will upgrade you to latest version
If you have latest version
right click start button
choose command prompt (admin)
type
SFC /scannow and press enter
Once its run, copy/paste this into same window
DISM /Online /Cleanup-Image /RestoreHealth
Now its likely DISM will come back with an error asking for a source. If this happens, do the following:
Download a copy of the win 10 iso from
Here - create ISO by telling it you want to make DVD - and then mount that ISO in file explorer (see
Here) and then copy paste the below command into command prompt (admin)
DISM /Online /Cleanup-Image /RestoreHealth /source:WIM:X:\Sources\Install.wim:1 /LimitAccess
Where "X" is the drive letter where the ISO is located. Simply change the "X" to the correct drive letter
Once DISM ifs finished, re run the SFC /scannow and restart PC
Explanation: SFC claens system files, DISM cleans the files SFC uses, but if DISM finds files that are corrupt that it cannot download from windows update, it needs a new ISO to get clean files from. If Both of these processes clean PC, you could actually run reset and it should work