Internet gone

I tried to disable File System Shield or something like that on Avast Free and after a hour my internet was gone. When I restarted my pc it was on again, but after another hour it was gone again. Why ?

Disabling File Shield and browsing at the same time? Why? ???
Besides, it does not change your connection status in anyway…

Well, I’m having a problem and support advised me to turn off some shields and see which one is causing the problem. As soon as I uninstalled Avast internet was on again…

Which was your previous antivirus? How did you uninstall it?
Any firewall? Or other security program that could be interfering?