After dropping a drive, putting it in the freezer ain't likely to work. You've probably smashed the heads, and there simply aren't anything left to read whats on the drive. If thats the case, you got microscopic shards of the heads bouncing around in the drive as well as the damage where the heads hit the disc(s) and restarting the drive over and over might make it worse. Try the freezer trick once, after that you have to make a decision. Buy a identical drive, and rip both drives in pieces, salvage the head assembly from the new working drive, and put it in the broken one, without letting them hit each other, or anything else, and you should, if your able to do the work careful enough, be able to grab your data... (Or whats left of it anyway) Then throw the two drives away. They are now both compromised by dust, and cant ever be seen as reliable.
The "freezer" trick was something came up with during IBM's "Deathstar" issues. It works for a large number of drives that die of "natural causes".
Best of luck.
B!