you dont need a licence key for drivers,
i suspect your using something like driver detective, wich is ransomware, and also sh~t.
i sugest if you cannot find/do not have time to find your drivers, that you download dprsu from here http://drp.su/ or pirate bay (its freeware so no probs) and that will do it all for you but wont try to bill you for the privilage, it will d/l faster from PB by the way
dont know why this is not advised more often, toms did a comparison for driver installers a bit back and metioned everyone bar dprsu? all the paid options got mentioned but the only free one was not?! consumer advice? eh?