Recovered Stolen Laptop BIOS Lock

I have a laptop that was stolen, after I got it back it has the lock in the corner and when I went to open it up for access to the motherboard and coax it into letting me back in to get my data back the insides vaguely match the photos in the tutorials but the compliance ID on the housing matches that of a T-420. Wtf is going on here.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0

crwdns2942205:01crwdne2942205:0:

type in the wrong password a few times to see if it gives you a code

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

crwdns2934285:0crwdne2934285:0