I think some of my system files are corrupted. The main problem I'm noticing is that when I try to open the Network and Sharing Center, a blank window opens that says "The page failed to load". I did a system file check, and it said it found errors it can't repair. The CBS file is loooong, and I don't know how do do anything with it anyway.
I think a repair install is in order. I don't mind if I need to re-install third party applications. But will a repair install also require me to re-install roles, features and users?