Here is a free laptop tracing software called Prey.
Prey lets you keep track of your phone or laptop at all times, and will help you find it if it ever gets lost or stolen.
It's lightweight, open source software, and free for anyone to use. And it just works.
How it Works?
Basically you install a tiny agent in your PC or phone, which silently waits for a remote signal to wake up and work its magic.
This signal is sent either from the Internet or through an SMS message, and allows you to gather information regarding the device's location, hardware and network status, and optionally trigger specific actions on it.
Notice:
This file is Trojan as detected by some antivirus, but the thing is every such files are called trojan, as the process is to Track your system and view your systems reports. But be secure, this file is not harmful for your system or for your personal information. This software is made By PRey Project Company, and they take responsibility of it.
how to install CLICK HERE TO GO TO PREY HOME PAGE and follow the instructions
Remember: This still has demerit E.g, If theif formats your system completly than its no way possible to get back than to ask for police, and they don't track laptop normally, until the stolen system is related with some serious case.