Internet conection crash

On the 6/01/14 my Avast security program updated automatically and requested a computer restart. Following the instructions this was carried out but my internet connection then crashed. The only way to get it running again was to uninstall the Avast program, but then on reinstallation the connection crashed again. I tried this 3 times with same results. Having no internet connection I tried downloading your free version only to experience the same problem. Currently I have no protective cover – can you suggest how I overcome this situation?

Try a custom install and untick Browser Protection ( AOS )

AOS = Avast Online Protection