Windows is installed and licensed for you when your PC is built. 
You do not need to install Windows nor enter your license key during the normal usage of your PC. 


If your PC is connected to the Internet, Windows will occasionally connect to Windows licensing servers to ensure that your license is active and registered. In some cases, Windows may report that it is not activated due to Microsoft system error. 

If you receive a notice from Windows that your installation is not activated, it will be necessary to reactivate Windows. 


To do so, start by locating the Windows license key sticker on your PC. This is your OEM license of Windows, purchased with your PC. 


You can find the license key on a sticker on the back or bottom of your PC. On Rok Box MC Mobile systems, the sticker will always be on the underside of the laptop chassis. 


The license key is 25 characters long and comprised of letters and numbers. 




Please locate this sticker on the back of your PC's case, snap a photo of it for your reference.  

Back in Windows, right-click the Start button and click Settings. 


In the settings panel, click System: 


Then click Activation: 



Then, click Change Product Key: 



Refer to the photo you previously took and enter your Windows product key into the resulting popup window. 


Windows should now be reactivated.