how can i activate windows 10

[Windows Central Question]

i can update my windows 8.1 to 10 and after some problems then i cant rollback to windows 8.1 ....and how can i update to my lost windows 10? and success fully install with my 8.1 product key? so please help me.

 

[holdum333]

Hi Welcome to Windows Central! Lots of questions! I think you said you can upgrade to W10, but now you can't rollback to W8.1 It is my understanding that your W8.1 license my no longer be valid if you upgraded and got a W10 digital license! You have several questions. Please join the forum and someone will help you!
You Don?t Need a Product Key to Install and Use Windows 10
PS If this link is not appropriate, please advise and delete!:wink:

http://forums.windowscentral.com/ask-question/310085-join-windows-central-community.html