I've tried most of the things suggested on this site and others so far. It's kind of frustrating because this is a home computer and I mainly use it for browsing the internet and watching YouTube videos. When I try to install something that might fix it, it just downloads a bunch of files and says to extract them or whatever. I'm not sure what to do with the files after I extract them. That's probably the main issue: I don't have a lot of experience working with computers at this level. I'm used to Windows, which seems to make most software installs idiot-proof. Any suggestions are appreciated!!