Office 2013 does not prompt for activation like 2010 when opening one of the applications. To get to the area where you can type in your MAK key, open one of the office application and start a new blank document, click file then click account. On the right hand side it shows product information and if your product has been activated, there is a change product key button where you can type in your MAK key and then click continue.
Office 2013 VLK MAK Activation
Previous post: Bluetooth Keyboard not connecting
Next post: FBI Warning Ransomeware Virus Removal