Something is running on my harddrive, it is constantly running. I am running windows 7 premium. These processes are running on my computer; csree.exe, atied.exe. ,dwm.exe, explorer.exe, rundll32.exe, and winlogon.exe. The cpu useage is at 30% Is this csrss.exe a virus? Today it shut down today and wouldn't boot up for over 2 hours. Help please!