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Bitdefender Is 2012 Makes Windows Instable After Installation

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Hi, I have a problem with my newly aqcuired Bitdefender Internet Security 2012 on my Windows Vista Home Premium. After installing it, Windows Updater instantly wants to reboot the computer to do an update, but when rebooted, I only get a black screen and an error telling me Windows has found unauthorized changes. This error gives me the option to search help online (which redirects to a windows site talking about genuine products) or to go to the loading screen (where you choose your account). Several people told me to reboot the PC in safe mode and to restore the pc to an earlier date, which I did. The computer went normal again, but I was left without antivirus, so I reinstalled Bitdefender again, and as soon as the installation was completed, I got a message of Windows Updater. After a quick search on your forums, I found several people with the same problem (http://forum.bitdefender.com/index.php?showtopic=32612).


So, is there a solution to this? As a student it is very frustrating to not have access to my files and stuff, as I'm in the middle of the finals.

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