How to Use a Product Key to Activate Windows 7

 

To use Windows 7 after 30 days, it must be enabled. To extend your activation grace period, use the "rearm" terminal command. Note that you can prolong your activation term to a maximum of 120 days by using the rearm command up to three times.

Turning on Windows 7

Press the ⊞ Win key, type "Cmd" into the search bar, and then select the Command Prompt application with a right-click. Choose "Run as Administrator" and enter "slmgr -rearm" in the resulting window. After pressing Enter, restart your computer. After then, your activation period ought to be reset to 30 days. 

 Press ⊞ Win and type "Cmd" into the search field. The search results will show the Command Prompt application.

 

Choose "Run as Administrator" by performing a right-click on the Command Prompt listing. This will open the administrator-level command prompt application.

 3 Type "slmgr -rearm" into the command line and press Enter. You will be prompted to restart your computer when a script has finished running.

 

Restart your computer.

 Verify the status of your activation. Click "Computer" with a right-click, then choose "Properties." The System Properties window opens as a result. It is necessary to reset your activation period to 30 days.

Remember that you can activate this command up to three times, for a total of 120 days.