I'm not a real geek but, I play one for old people and kids.
The first thing I might look at would be to open task manager and see if anything else is running. if it is, stop it and go to your start up folder and see what's in there. (it all starts whenever you start your computer.)
If that's not it go to device manager and see if any ? marks show up for device drivers.
If that aint it call a real geek