Still don't know what's broken...

I managed to back everything up that was vital, though it seems my old backup hard drive has now died. I fixed my anti-virus so no more complaining messages from Windows saying I need to have an anti-virus running. It seems to be working now, but restarting is a chore and sometimes it hangs for no apparent reason. I've also got a part-time retail job lined up, so I can spend less time obsessing over work.