help pleas

ok so i just got avast internet security, and now i cant connect to the internet unless i turn off avast’s firewall

what AV program did you have before installing avast ?
have you removed it ?
did you run a removal tool to clear out any leftovers ?

Run and reboot:
Uninstallers for Security Software http://thewebatom.net/uninstallers/security-software/

if still problems try avast repair…or reinstall

For a repair of avast. Windows, Add Remove programs, select ‘avast! Anti-Virus,’ click the Change/Remove button from the pop-up window, scroll down to Repair, click next and follow.