Hey, i have a problem with Vista. When i system restored my PC, and when i log back into my account. I saw a Security message pop-up. I went to check and my Antivirus/spyware protection is turned off. When i clicked Turn on now, it didn't start. Even With AVG 8.5 Free Edition, still the same. Can Somebody help?

try to update Windows and AVG, then if problem still happen contact AVG support team or visit their forum.