How to Change windows 7 Product key

Method 1: Manual

1. Right Click on My Computer and Select Properties.

2. Wait a second for windows activation details to get populated.

3. Click on Change Product key link after your Windows 7 activation details are populated.

4. Enter New Product Key and click on next to activate your windows 7

Method 2: Command Prompt

1. Click on start and type command (cmd) with run as administrator option or check how to open elevated command prompt

2. Now type following command

“slmgr.vbs -ipk ”

3. To activate windows after changing the key, run “slmgr.vbs -ato”