BSOD with Avast

I there any tutorial how to fix the avast BSOD step by step?

I saw a tutorial on different sites but not from Avast himself, where you need to disable Network shield.

I bought the avast Pro FOR the Network shield.

By the way the Computer if fully hardware tested without any errors(Prime95,Memtest,Seatools and Furmark)

Is there any solution witch is trustfull?

What os/sp?
What exact version of avast?
Any other security (related) software installed? (or previous installed)
What is the exact error on the bsod?