enterprise evaluation expired cannot find my Windows 10

Hello,

Product keys are usually provided when you buy an Office or a Windows product. To better assist you, we need the answers to the following:

• Are you referring to Office Enterprise or Windows 10 Enterprise?
• Does your copy came pre-installed on your computer?

In the meantime, we suggest checking the steps in this article on how to find your Windows product key.

Should you have questions, please let us know.

The Windows 10 Enterprise 90 day trial is only for 3 months. You can't convert it to a full release or upgrade or get a Windows 10 Enterprise license for it, because its a volume license client.

This means, you will either need to purchase a Windows 10 Pro or Windows 10 Home license then perform a clean or custom install.

Step 1: buy Home or Pro

Buy Windows 10 Home/Pro

Step 2: Download and create a bootable copy:

How to Prepare Bootable Install Media for Windows 10 - DVD, USB or SD Card

Step 3: Perform a clean or custom install: