Ouf! I hope you didn't have important data on it and/or have a good backup! Was the shop insured?
No data on it at all. This is the second time theyve had it. I hope they were insured! I had to call the police today to provided them with the S/N of my iMac.
Find my mac installed? You could wipe it remotely.
They have the computer because the OS wouldn't install. Don't think it would show up without it turning on properly