Here is the easy solution to find out the serial number of any laptop.Just follow the following steps::
Steps-
1) Open the Command Prompt
2)type the following command-
c:\>wmic bios get serialnumber
This will give you your machines serial number by pulling the information from
BIOS.Take a look how it works
You can use this command" wmic csproduct get name" to get the local
computer model.
WMIC stands for : Windows Management Instrumentation Command-Line
http://msdn.microsoft.com/