What do I do about my computer!?

I think I caught a bad virus or something. I was having problems reinstalling some programs earlier, because my computer thought they were still installed, so I removed them using Windows Install Cleaner. They were the only programs that I touched. I was then able to reinstall AutoCAD, after cleaning my registry using Glary Utilities. I thought that my computer was working perfectly fine, until I opened Microsoft Word. When I opened the program, some sort of program popped up and started doing something, with a green loading type bar, and all I caught were the words install and configure. Word then closed, and now it seems to have uninstalled AutoCAD and and Microsoft Office 2010. My computer also seems to be unwilling to connect to the internet. I ran a check with Glary Utilities which showed no spyware, and I cannot run a Trend Micro security check since I cannot connect to my home wireless network. Luckilly it only seems to have affected my programs and my Internet, but my personal files seem to be intact. Is there anything I can do, or do I have to open my restore partition? Please help! Thanks in advance.