this screen was purchased at great prices and perfectly fulfilled the required functions, the touch is responsive and I find that, contrary to what is written on it, you can watch a mkv without finishing crazy because of the afterglow. The installation under w8.1 is destabilizing because the bone is stingy information about the progress and it takes a facility because it is a touch screen. I put only four stars because the maniac that I detected a dead pixel ... It enters the construction hazards, so I have not returned, and it does not bother me absolutely not, but this prestige brand was to me a priori impeccable, so ...