Non stop warning

Barro, 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

Hello Barro,
I am sorry to hear that you are encountering AVG threat detection pop up in your PC. Please share the screenshot of the pop up to provide better assistance.
To create a screenshot, please follow this article http://avgread.me/1aZxsAV .
Thank you.

I am getting a warning saying that a threat has been blocked. This appears constantly, I close it and it appears again. Somebody knows how to stop it?