avast firewall not loading.

A few days ago the safe zone on my wife`s PC stopped working, the advice to uninstall re-install,
which I did, safe zone is now working but the firewall is NOT; during set up an error message pops up.
firewall driver cannot be installed.
Any help on this please.

If you are using Windows 7, try this.

Go to Network and Sharing in Control Panel. Click on Change Adapter Settings.

This should bring up your Local Area Connection. Right click on it, and click on Properties.

This should bring up a box that shows the Avast Firewall NDIS Filter Driver.

If it is there, make sure there is a check mark beside it, and click install.