After reading above post maybe this might help in some problems.......
WINDOWS 10 NAGGER AND SYSTEM CRASHES
If your pc gives an error message that GWXUX won't start it's referring to the Windows 10 update nagger that has appeared over the past couple of months. There are numerous posts on the outerweb, some claim that the nagger is even making their systems crash.
If you're not interested in Windows 10 you'll need to uninstall the "PUP" (potentially unwanted programme) that came in the form of a Windows update number KB3035583. You'll know it's in there if you have a little "windows" logo at the bottom right of your screen in the quick start menu.
To remove this go to:
Control panel > Programs and features > View installed updates
Next, search for the windows update KB3035833 and select uninstall. By date it will be sometime July or August 2015.
Daz