Francemi, I had the same thing happen when I installed the QuicktimeAlternative program. For some strange reason I couldn't get Poser to open further than the screen you described. I was going crazy trying to find the cause and just by chance uninstalled that program and everything worked fine. So it sounds like you may have the same thing happening. I also have an HP All in One and haven't had any problems, but I don't recall it having to remove any Windows updates either. You might try uninstalling the Printer software and see if Poser will open completely.