i can not start firewall

hi all i can not start firewall is there anyone who can help me with this problem

Try a repair first from Control Panel>Uninstall a Program>Change>Avast>Repair

If that doesn’t work…

  1. Download Avastclear, Rejzors uninstall tool and the appropriate Avast program edition

You need to be online during this install…

http://files.avast.com/iavs9x/avast_free_antivirus_setup_online.exe
http://files.avast.com/iavs9x/avast_pro_antivirus_setup_online.exe
http://files.avast.com/iavs9x/avast_internet_security_setup_online.exe
http://files.avast.com/iavs9x/avast_premier_antivirus_setup_online.exe

Avastclear : http://files.avast.com/iavs9x/avastclear.exe
Rejzors Uninstall tool: http://rejzor.wordpress.com/avast-cleanup-tool/

  1. Uninstall Avast by control panel [If you don’t have Avast in control Panel go to #4]
  2. Uninstall in safe mode using Avastclear.
  3. Run Rejzors Uninstall Utility in Normal Mode (removes traces avastclear doesn’t) - reboot.
  4. Install the version you downloaded.
  5. Reboot.

You can insert license file during install or after reboot. (If using paid version)

many thanks for that I really appreciate your help