Computer freezing since window 10 upgrade

Diane,
We do understand how difficult this is for you, we apologize. Could you please let us know the exact name and version of AVG program you have installed, is that paid or free version? If possible, provide us with the screenshot http://avgclick.me/getscreenshot of the AVG user interface so that we will look into this and help you further. Thank you!

my computer continually locks up and upon rebooting entire system, it is always after AVG is advertising or running something - this has started since my Windows 10 upgrade

Diane,
We do understand how difficult this is for you, we apologize. Could you please let us know the exact name and version of AVG program you have installed, is that paid or free version? If possible, provide us with the screenshot http://avgclick.me/getscreenshot of the AVG user interface so that we will look into this and help you further. Thank you!