Advanced PC Shield 2012 is a fake Antivirus. It belongs to the Braviax family (On this point we are in contradiction).
As usual it displays fake warning messages and prevent legit softwares execution to push users into buying a license.
If your PC is infected with some of the Braviax family rogue use MBAM & UnHackMe, Eset to remove the infection. The rogue is closing legit software.
You can register by entering the following serial code 8945315-6548431 (manual registration).