mb you try the offline installer of directx_redist (after extract run dxsetup.exe)
https://www.microsoft.com/en-us/download/details.aspx?id=8109or simply re-register the missing files by a reg-extension?
http://www.eightforums.com/tutorials/40512-register-unregister-context-menu-dll-ocx-files.htmlit also could be a problem if using different languages of the redist packages...
and all the of the other possible win_issues...
.net framework, run as admin if MB is placed in SystemFolders, click "unblock" at the properties-window of .dll/.ini files...
windows 10 is allways good for a little surprise
it's been a while ago ...
when I had win 10 placed directly with a microsoft account, I noticed that my User was assigned to "standard user"-group.
although it was the only UserAccount i had no administrative privileges.
i had really troubles with the new radeon settingsapp until i recognized it... (so i was able to install my graphic drivers but not allowed to change settings/use higher functions)
at least format c: is the fastest troubleshooting in windows
because I've just found out how to unlock Dolby DTS on Realtek-Chips(~5 clicks):
http://www5.zippyshare.com/v/2Hs1jbby/file.html