you're not supposed to unhide theses files.I looked into my problem today and began installing the things it said I was missing. Every time it would say a new one was missing until I noticed that they were all actually there. The weird thing is, is that they are all hidden files and even with admit rights I can't unhide them. Know anything I can do?
try with this guide:
https://www.techhit.com/how-to/install-.net-3.5.1/windows7/
(uninstall first if already installed, reboot, install, reboot)