I'm using Vista Home Premium. Suddenly the Windows Security Alert popsin whenever I boot my laptop and when I check, the firewall was turn off. When I tried to turn it on, an error prompts "Security Center can't turn Windows Firewall". When I click "Turn on Windows Firewall manually" and choose Change Settings the option to turn it on is greyed out and on the top says "For your security, some settings are controlled by Group Policy". I belong to administrator group and not connected to any domain. I even tried to run regedit from the run option and to my surprise it give me this message "Registry editing has been disabled by your administrator." I even try logging in as administrator but have the same problem. How to resolve this problem.

Hi Go to Orb > Accessories > Run > type in services.msc > in the Services windows look for "Security Center" > Double click it and under "Start-up type" select Automatic (Delayed start)RebootAny luck?