Can't print screen

How to unblock print screen? Can no longer do a print screen after installing. I'm sure there is a work around but haven't found it.

Hi Barbara,

We apologize for the inconvenience. We'll certainly look into this and help you.
Could you specify whether you've made any changes to your computer using AVG TuneUp and AVG Driver Updater?
Did you start experiencing this issue after using AVG Driver Updater to update any outdated system drivers?
Awaiting your response.

Hi Barbara,

We apologize for the inconvenience. We'll certainly look into this and help you.
Could you specify whether you've made any changes to your computer using AVG TuneUp and AVG Driver Updater?
Did you start experiencing this issue after using AVG Driver Updater to update any outdated system drivers?
Awaiting your response.