My PC is connected to my 435XDE via HDMI, however when I change from HDMI to another source, I 'loose' the PC connection- the Pc is still active but my TV doesn't 'see' the PC. Even turning on/off the TV makes no difference, it seems as though the only time it'll see the Pc is on boot-up. I've got a Radeon 9800Pro card running the latest Catalyst center which allows you to easily change the screen resolution to a custom 'non-standard' size, ideal for the 435. Anybody have any ideas? Cheers.