After several attempts with Technisat, TeVii and what I still know everything, super twin tuner card. In several computers under the Win7 Media Center tried, no dropouts. HD TV is great, even switching. The only drawback, as with all my satellite maps and computers that "wake up" from standby. Since all maps and computer combinations were not always 100% reliable in the long run. This problem can be of Hibernate (Hibernate). Otherwise runs dat things for half a year without added look reliable. So that should be !!!