Ok...
You are going to have to say that one more time.

Only thing that I understood was "I just noticed my windows machine is closing almost everything i open" After that I get lost.

Now just going off the top of my head, do you have a good Firewall, and AV, also do a scan for a Trojan. It is a nice way to mess with people by closing there programs.

Check that out.

If you can re-explain the end I might be able to help you further.