At first glance, the CSL Speed 4764Pro (Core i7) has made a good impression. Fast delivery, easy installation and the anticipated speed convinced. I had already donated several hours of work to transfer the data from my old computer and install programs, until I had to insert a DVD for the first time. Unfortunately, the DVD drive was not openable. The device has no right switch for it, but a place on the housing for pushing. The actual switch of the DVD drive is located behind the hinge of the door opening. Over an inner rail of the pressure is to be forwarded. Depending whether the plastic slide is properly seated, the switch is hit or not. Sorry, for 800, - I expect the technology works. The computer I have sent back.