Hello! Im having some issues since I updated my gf's win8 to win8.1. When she boots the computer, a lot of error windows appear, with messages about the DWM symbols or something like that. Does it have an easy solution? If you need more accurate, I will ask her for photos with the windows. I really thank you your work, you have really changed the SO, making me love it. Perfeccionist people want perfect computers.