Computer crashing, i think because oc C++ 05' Visual

I have just recently installed Microsoft visual c++ redistributable and web root spy sweeper. And since then, my system has been crashing constantly. Before i was running completely smoothly. It wouldn't even allow me to run windows update, and have now blocked access to my favorites. Thats right, may favorites has like a brown covering over it, and when i go to check the favorites folder, the folder isn't even their. I tried to restore to a previous point, but that just removed some much needed files, so i had to restore back to the previous installation.

Has anybody encountered what im going through....what should i do, where should i start.....holla back