Windows 7: Strange problem with dual monitors?

Hi all,

I've tried to search for this problem but did not find anything...

(this worked fine with Vista)

I have a Shuttle sitting below my Samsung HD TV and I connect to it via HDMI cable, this all works (worked) fine under Vista.

Now I just installed 7 build 7077 (downloading 7100 as we speak to see if it's fixed) and tried to do the same...installed Windows 7 without a problem with my LCD monitor enabled.

My HD TV is detected, I can change resolution etc. make it my primary monitor, that all works. Installed drivers for my ATI x800.

The problem is: I want to ONLY use my HD TV. When I tell Windows 7 to only use Desktop 2 (HD TV) I get black screen...this works fine if I tell it to use Desktop 1 (LCD).
When I just remove my LCD it's still in extended mode and when I restart I get black screen on my HD TV...
In CCC I can disable my HD TV but not my LCD...nothing happends...

Any ideas?



(I want to ONLY use HD TV when I start my shuttle)

Thank you.