I have the following problems during my update from Windows 8.1.
1. System Restore could not start. It shows an error " C:\Windows\system32\smartscreensettings.exe" The system could not find the environment option that was entered.
2. Error occurred while troubleshooting.Troubleshooting wizard can't continue. Path unknown . Error code : Ox8000FFFF
3. In Troubleshooting - Windows cannot find %windir%\system32\rundll32.exe
4. In Windows update Diagnostic , an error occurred while troubleshooting. It said Troubleshooting can't continue. It gave an error code as Ox80700CB
5. Could not open System restore, Device Manager, GWxWeb windows.exe due to the same problem.
Please let me know the safest method to restore first Windows 8.1 with all my files, folders before I start the repair as per your suggestion.
Thanks & regards,