Windows 8.1 Professional
1. Select the Start button, type PC settings, and then select PC settings from the list of results.
2. Choose Activate Windows.
![How to Activate Windows 8.1 1 dof21frymmIOPFrLZdfzm9Q7i7V5AvGB w](https://s3-eu-central-1.amazonaws.com/euc-cdn.freshdesk.com/data/helpdesk/attachments/production/80010451713/original/dof21frymmIOPFrLZdfzm9Q7i7V5AvGB-w.png?1620135367)
3. On the Activate Windows screen, click Enter key.
![How to Activate Windows 8.1 2 C4AwydydAPMAh4bXfMeTV46lam](https://s3-eu-central-1.amazonaws.com/euc-cdn.freshdesk.com/data/helpdesk/attachments/production/80010452538/original/C4AwydydAPMAh4bXfMeTV46lam-x_ew1tg.png?1620135621)
4. Enter your Windows 8.1 product key, select Next. At this point, just follow the on-screen instructions to activate Windows 8.1.
![How to Activate Windows 8.1 3 XtpWzb8RSaBRTNsQvnkF 8HmGVGyt07y1A](https://s3-eu-central-1.amazonaws.com/euc-cdn.freshdesk.com/data/helpdesk/attachments/production/80010452591/original/XtpWzb8RSaBRTNsQvnkF-8HmGVGyt07y1A.png?1620135648)
If you prefer clean installation, please refer to How to perform Windows 8.1 Clean Installation.
Note: In case you need a Windows 8 ISO, please proceed to this link. Here’s an alternative link.