WiDi is no longer supported. Got it. I uninstalled the app, still got the notifications. I went through the file system and registry to remove every mention of WiDi, I still get notifications that 1) the app has been removed, and 2) the app is no longer supported. I don't want to disable all notifications about unsupported apps, but I can't seem to figure out how to stop getting these useless notifications every time I boot the computer.