can't launch several applications

[AlphaGolf]

I recently updated the HP my display. which completely messed up my system. I uninstalled it but i can still not launch several programs that are video related like techsmith snagit (for screenshots), skype works but not the video,
i tried updating windows,
I tried reinstalling the old "HP my display" but even that doesn't launch,

tried ccleaner to fix registry errors.
what else can i do?

thanks

(Product number B7G46EA )

[WAWood]

@AlphaGolf 

Here's a previous forum thread with information from an HP support agent that might help:  https://h30434.www3.hp.com/t5/Desktop-Software-and-How-To-Questions/HP-My-Display-App/td-p/7156024