If its already stolen, then you may be out of luck! As some people would completely scrap everything on the laptop, meaning reinstall software with their own or pirated of course. Some may break it down piece by piece and sell the hardware separately. And some would put it on eBay immediately and sell it as is, but you would have a tough time getting it back from someone who just paid $600 bucks for the laptop! If it hasn't been stolen then your best option is to use GPS tracking hardware/software.