The power supply was defective from the start, but I have a little later noticed that the fan of the New Testament is the culprit. This is of secondary often run out and then no longer jumps to. At system startup, it remains out of sometimes simple. The system is then eg graphics-intensive games just off completely. Meanwhile, the fan will run no longer. Okluge did not want to replace, as the 30-day return period was expired, so I sent the unit to Listan in the service. This came yesterday back to me on the ground, there as no defect. Then installed power supply with me and in two farther computers and lo and behold, the fan will not piece. So it's defective and the service has yet played me, or. So Listan / BeQuiet died for me. The still get a nice letter from me (or equal by my lawyer) and then we'll see. In any case, the 40-Euro-cheap power supply that I bought as a replacement for the remainder of the repair runs, 10 times better and more reliable than the (for me) very expensive BeQuiet part. And I remember how to put forward to me from all sides, as well the company BeQuiet is, and what they have for a top and generous customer service. Haha, I do not laugh.