Hey guys was trying to do my egr valve today and had a few problems so wondering if u can help....

Got a 1.9 cdti vectra and while i was trying to get the bottom bolt off of the egr valve i dropped the torx screwdriver down to the tray under my car, any way i can get it out?? And how the hell do u get the bottom screw off the egr as i cant get to it??

Thanks!!