Hi prasaddevendla,
I'm Roshan V S, Independent advisor and a Windows user like you.
Can I assume that you need help to find your windows product key?
If that is the case Press win+x, then click powershell(admin)
type the following command and hit enter
(Get-WmiObject -query 'select * from SoftwareLicensingService').OA3xOriginalProductKey
https://support.microsoft.com/en-in/help/10749/...
Do get back to us with the result. We will be glad to help if you need further assistance.
Best Regards
Roshan V S
Indepedent Advisor