Win 7 Pro upgrade from Win 7 Home Premium

[Captmcnet]

I currently have an 1156 mobo system which had Win 7 Hme Prim installed and upgraded to Win 7 Pro, on line , directly from MS through their easy upgrade policy.
Now I am in process of building an 1155 mobo, with 3rd gen i5 CPU, system to replace the old 1156 system.

Problem: I do not recall receiving from MS any email regarding a Key number for the Win 7 Pro product. How do I retrieve proof that I paid for the Win 7 Pro product and how do I install that product on the new SSD C drive on the new system?

All help appreciated.

 

[Hanna 1]

Download Belarc Advisor, run it and inside you will see your product key for windows.

Belarc Advisor - Free Personal PC Audit, for software, hardware and security configuration information on your computer. Software license management, IT asset management, cyber security audits, and more.