Insider Preview Windows 10 Downgrade to 8.1

I bought my computer last November, since then, I installed windows 10 technical preview, now whilst the OS is good, its getting too buggy for me too handle at the moment, saying this, I would like to downgrade to windows 8.1 which was my original OS. The only problem is I don't have any other OS on the system installed apart from W10 and because of this, when I boot up my windows 8.1 disk (Which is from cyber power), it asks for a product key which I don't have. Because W8.1 was pre installed on the system, I assumed it would remember and just tell me the product code, this is not the case, I have even checked the back of my computer for the code, help me >_<

If I use the recovery media from W10 website, will that work, or will it just ask for a product code again??


Excellent Member
You can try to call Microsoft support for windows 8.1. They should be able to help you out on the product key. Just explain what you did.

This website is not affiliated, owned, or endorsed by Microsoft Corporation. It is a member of the Microsoft Partner Program.