Font changed after installation

Hello Belinda,
Sorry to hear that. Are you facing issue with your PC after installing AVG Free Antivirus? If so, please disable it as mentioned in this article ( http://support.avg.com/SupportArticleView?urlname=How-to-use-Passive-Mode ) and check if it works. If the issue is resolved after disabling AVG, please share the screenshot of letters in your PC to assist further.
To create a screenshot, please follow this article http://avgread.me/1aZxsAV .
Thank you.

Hello. Since installation the letters on my screen are skinny and riddled with holes. Not sure how this happened?

Hello Belinda,
Sorry to hear that. Are you facing issue with your PC after installing AVG Free Antivirus? If so, please disable it as mentioned in this article ( http://support.avg.com/SupportArticleView?urlname=How-to-use-Passive-Mode ) and check if it works. If the issue is resolved after disabling AVG, please share the screenshot of letters in your PC to assist further.
To create a screenshot, please follow this article http://avgread.me/1aZxsAV .
Thank you.

Belinda, If applicable… For your info, just in case that you are unaware, you can post the screenshot here in your topic. Click on 'Answer' & then click on the 'Image' [mountain symbol] & follow the instructions. 
AVG Guru