mini port error 31

My firewall is not working and in device mgr it shows the ndis mini port is not working and it won’t update…I have spent hours on this and I am very frustrated. I am about to end my relationship with Avast if someone cannot show me how to fix this. I need this fixed now please.

have you tried avast repair?

controlpanel > ad/remove programs > avast > uninstall/change > repair option …wait a minute and reboot

any change?