You may be seeing this as a result of a recent download of a program called: Music Match Jukebox. Or, if you have a system that is new, it may have already been installed on your system. In any case, this could be the root of your problem. Try this:
1. Go to Start>> Run. Type in: msconfig [Enter] or click OK.
2. Click the Startup tab
3. Uncheck anything relating to MusicMatch (eg: mimboot.exe)
4. Click Apply, then OK
5. Choose to reboot the system, when prompted for the change to take affect.