Active Army, Laptop stolen need help?

My laptop was stolen by another soldier. I found out who he was, he is in another unit, and after informing my chain of command and his unit. They don't know where he is because their pretty ate up and don't have his records because he was just transferred to Rear D before their deployment (S**T B*G) and apparently he signed out on leave the morning after the theft. The MP's don't care because their is no way to prove he stole it and a whole lot of other nonsense. It is an expensive laptop and i have a lot of irreplaceable data stored on it. I need some serious help or advice.