I'm sorry dude...nothing's comming to mind right now... My only last resorts would be perhaps look for some service for autorun. Make sure it's enabled/restart it.
You might also try something like X-Setup. FOr some reason I'm thinking there was some autostart option in there. Perhaps you could download that and check it out.
Um, one more thing, just check what programs you have running in the background. Perhaps even boot your comp into safemode and see if it still doesn't work. if it does, perhaps run the repair option?