That system shouldn't have any problems.  Are you sure you tried 0.87.2?  The only place you can even get version 0.76 (github) does not have the latest version.  Also, I recommend doing a full uninstall and maybe even remove the C:\Program Files (x86)\Armory directory, before reinstalling the latest.

Also, please try it in offline mode, too.  There's a launcher in the start menu for it.  It is extremely useful to know whether it works in offline mode, and you can easily get me a log file. 

Thanks for being patient!