Windows 10: I forgot my product key by resetting my laptop before a few days .please give me my product...

I forgot my product key by resetting my laptop before a few days .please give me my product key to re activate my window

:)

 

My Product Key

I have hit another roadblock in my marathon two-day attempt to restore the laptop that Windows 10 destroyed. I do not have the product key for the device, so cannot even revert to Windows 8.1. The product key is not shown in the Amazon purchase listing for the device, and I long ago lost the paperwork. Is there any way I can look it up (keeping in mind of course that the device itself is utterly unusable in its current state)?

 

product key

hello ,

few day ago i formetted my laptop and installed win10 but i forgot my product key when i brought the laptop i was running on win7 home i have my old key would it work now??

 

Forgot product key to activate Windows 10.

Original title : Forgot product key

When I purchased laptop, window 8 was there and later I installed window 10 free through Microsoft online. Currently, I sent my laptop for repair under warranty. When I received, I found my window inactive. Now I want to activate it but I forgot product
key.

Kindly guide me to resolve this issue.

Regards.