Do you still have the old laptop? You need to see that it doesn't work in the old laptop where it was working to be absolutely sure it's dead. There may be some type of BIOS issue or something else preventing the MT-40 from operating properly, though it's a long shot. I agree, you may have killed it, but you want to be sure before exchanging, etc. only to find yourself in the same situation some weeks later...
Do you have a S754 working motherboard and a HSF that you could test the Turion in? You only want to verify that it will boot, not necessaryly be recognized, etc.
If you properly grounded yourself and your work environment, the CPU may be OK.
I'm suspicious until you "prove", not assume, that the MT-40 is really dead...
Athlon 64 3400+ (CG) @ 2.4GHz, Asus K8N-E Deluxe, 2 GB OCZ DDR400, BFG nVidia 6800OC 128MB, Seagate 200GB PATA, Seagate 160GB PATA, Dual Boot XP and x64, Antec 350W Mid-Tower
Athlon 64 3400+ (E3) @ 2.4GHz, Asus K8N-E Deluxe, 2 GB OCZ DDR400, eVGA nVidia 6800 128MB, Seagate 320GB SATA, Vista x64, Antec 350W Mid-Tower