Action Center replaces Windows Security Center in Win7.
Action Center manages firewall settings, Windows Update, anti-spyware software settings, Internet security, and User Account control settings. Action Center also monitors computer maintenance settings and provides links to trouble-shooting and other tools that can help fix problems.
To find the Action Center: click the Start button, click Control Panel, and then under System and Security, click Review your computer's status.
Check to see if Avast is being recognized as your antivirus (AV) in the Action Center. Thank you.