Computer lock up

Hello Colin.
Are you receiving the pop up when you use AVG TuneUp?
Could you share an image of the message you receive?

Every time I need to use AVG and a window pops up my computer stops responding , the mouse still moves but no response to ANY button on the screen . For example inserting a usb memory stick a window pops up to check for virus , which is ok , but I cannot press any of the options and I have to switch off and start again . Also today  I tried to open a web page and a window popped up saying it was supect so blocked access which is good but i could not respond to the options including closing the window . WHAT IS GOING ON ?

Hello Colin.
Are you receiving the pop up when you use AVG TuneUp?
Could you share an image of the message you receive?