The first device had dead pixels in the black area (other colors are not tested) and a "strip" (lighter than the rest of the screen), run 5mm wide, vertically on the screen. The second unit had more dead pixels, this time not in the black area, but in white and RGB. These extreme brightness differences between top / bottom and left / right to the corners of each.
If the third device also be problematic, then I have to look for something else. Too bad.
* UPDATE *
The 3rd unit had finally no more problems with the screen and dead pixels. But that was back and forth very annoying. As described by other customers Wi-Fi is really very bad and I try it soon replaced. However, it can not be that a device is equipped from the factory with such a hindrance.
Otherwise, I'm pretty pleased with the laptop. He is very quiet and easy. The performance is for the price and the processing more than adequate. Who therefore has this laptop in mind, the will not be disappointed.
* UPDATE * # 2
I have the 8 GB Ram exchanged 16GB. The exchange went smoothly - but is not for beginners. It should be made only on Youtube tutorial (there are min. 2 videos in German, which are very detailed and professional) and at your own risk! Who never had a computer (and particularly a laptop) has opened, this should not go it alone or it can possibly even be. In my opinion, the housing was the biggest hurdle - make sure to first watch videos to otherwise desperate one.
Today, the rather poor WLAN / Bluetooth module is replaced with a new Intel. Since this is on the "front" of the motherboard, there will be less work than the main memory.
