Windows 10: I accidentally deleted my windows 10 product key

I accidentally deleted my windows 10 product key.i have no stickers and neither command promt or showkeyplus works. the problem is that i got my laptop as a gift so i don't have the email for the purchase and there is already the "activate windows" on my screenHow can i get it activated?Edit: it says error code :0x803f7001

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Installing Windows 10 using Windows 7 key

Nope, you need to install Windows 10 first and make sure the Windows 7 key is transferred to your Windows account after you've installed Windows 10 (not quite sure how that works). I missed the last step and I could not activate Windows 10 after a re-install... Microsoft seem to have done everything they can to make it a PITA. Also, it's technically too late to do this now anyhow, as the upgrade offer has expired. But KMSPico works quite well...

As for getting rid of Windows, delete the Windows folder.

 

I have accidentally uninstalled my Product key in Windows 8 to be used for WIndows 10

Hi I was trying to find my Product key for my laptop hybrid (ASUS T100) and i was looking for steps on a site. I accidentally deleted my product key leading me to an ungenuine Windows 8. Please help me because I also need this for the installation of Windows
10. I hope that this problem has a solution. Thank you for your help!

 

windows 10 key

Google and download the "Windows 10 media creation tool"

Create a USB flash drive ISO and that's all you need...it will work without needing a key..
Just skip past entering a key during full install and delete all partitions, format, create new drive and install...

As long as you have upgraded from Windows 8 first...you need to do that prior to using your Windows 8 key for 10.