So I am attempting to connect to my HTPC with HDMI passthrough and I can get the initial view of the desktop and can even start Windows Media Center and play some movies but invariably the connection will freeze at some point leaving the system seemingly unresponsive but I know that my keyboard/mouse commands are actually affecting my PC so its not the PC issue. Also, when I click into the WMC it will sometimes shrink to 4:3 screen size from 16:9 for no reason. If I then exit to desktop the screen will revert back to 16:9 but most of the time this is when the connection freezes and I have to start another app and come back to Windows (TV) later on.
I am hearing reports of people having success with their HTPC rigs so I am curious what types of things you did (I already changed my hdmi cables, removed the av receiver from the setup, tried resetting my tv setup but nothing seems to be helping and the issue keeps coming back)... Using Dell Inspiron 660s, Intel HD 2500 and the computer has been rock solid for all kinds of other stuff for a while now so I know its not it.
Hope someone can give me some ideas!