Tracking serial number of my stolen laptop

[Bq1730]

My laptop was stolen long time ago but was told some stolen laptops have been recovered. However, they need serial number to establish ownership which I don't have the serial number how can I get the serial number?. I have Document part Number.

 

[WR2]

See the answer posted in your previous topic, same subject:
http/www.tomshardware.com/forum/74756-35-tracking-serial-numbers-laptops