Disabling Popups that stop me from Progressing

Image of problem:Imgur: The magic of the Internet
Info about my computer:
OS:Windows 8.1
Computer Manufacturer: Dell

As seen in the image, I've been really annoyed about this problem where I get this popup EVERYTIME I start AVG telling me to Buy AVG since my trial expired. I can't even exit out of the popup, so it stops me from doing anything. How to I fix this? 
Thanks, Bill

Hello Billy,
Thank you for contacting us. We request you to upgrade your expired trial version to paid version or downgrade it to free version to stop the pop ups. Please have a look at this article ( http://avgclick.me/removeAVGtrialpopup ). Thank you.