1. System restore back to before you did this
2. Back to your own latest backup of your registry (if you made one before messing it up).
3. Back to your latest image backup (if you make those)
Just deleted sommit in the registry to get rid of previous installed mobile devices... so I went a bit mad and deleted all mobiles ever connected to Windows 7, now when i connect my mobile device it has no autoplay, even thought the tic box is on autoplay in control panel is checked it didn't show at the bottom of autoplay either ..... but here's the weird bit it shows the device in my computer when connected......... any ideas on how to get back autoplay prompt when I plugin my device????? Please help