Theme not Changing?

I am sorry we have tried all I can thing of. One of those guides should have done it. Hopefully someone else has a idea your PC is being stubborn.
Jerry

This problem is bugging me are you running as Administrator or user
Jerry

Well, yes, group policy isn't there in home premium, sorry.
Do you have the UnsignedThemeService running in task manager? If it's not there i.e. not running, then type services in start search and select services option, find that service and start that. Set it's startup type to automatic.

EzioAuditore said:

Well, yes, group policy isn't there in home premium, sorry.
Do you have the UnsignedThemeService running in task manager? If it's not there i.e. not running, then type services in start search and select services option, find that service and start that. Set it's startup type to automatic.

Try want EzioAuditore has here after that I do not know sorry
other than a fresh install or refresh to factory setting (a lot for a theme) to start fresh
Jerry

I think EzioAuditore has it that service is for UxStyle I just uninstalled it & it was gone from service you need to
#1 uninstall UxStyle
#2 restart
#3 disable UAC
#4 restart
#5 install UxStyle x64
#6 restart
#7 enable UAC if you want to

and see if that is in services (theme will work)
Jerry

That service is responsible for installation and use of custom, unsigned themes. If its not there, your times wont gonna work.
Follow Bongo's advice and see what happens. If you still face problems, try to run the installer as an admin.