|Did you ever see a newspaper, magazine, or book written entirely in caps? You know why?? Because it's hard to read. Not only that, but it's rude & considered to be shouting. And no one likes getting yelled at. I'm asking nicely, please turn off the Caps Lock. Only use caps where they are required. Thanks.|
So why are you still running AVG 8? It's old news. AVG 10 has been out for a while now. Either remove * & replace with 10, or wipe it out completely & replace with Security Essentials as suggested above.
EDIT: If you can't download anything related to AVG, your system is probably infected by a bug that's blocking you from fixing the problem. See if you can download & install MalwareBytes: