HDMI from T.V. to PC Display Failure

[rickylon]

So here is my problem,

My Graphics card has 3 slots, two DVI and one HDMI.  I have both DVIs connected to my monitors, but when I try to connect the HDMI to my T.V. all the screens turn black and display won't come back, not even after disconnecting DVIs.  HDMI works with the monitors but not with the T.V., I was thinking it might be an issue with late response form the T.V. to the computer? or maybe a drivers issue?.. I did my research but couldn't find anything that solved the probelm.  please help

(Windows 7)

[Transfusion]

Some motherboards/graphics cards don't allow simultaneous output.
"The Radeon HD 4200 supports HDMI, DisplayPort (if integrated) and DVI. HDCP support is native to the Radeon HD 4200's video controller, so it's fully compatible with high-definition content played over Blu-ray discs. Within the AMD 785G are two independent display controllers, one digital (DVI/DP/HDMI) and one analog for displays. Depending on the manufacturers board-level implementation, the 785G will easily support dual monitors (one analog and one digital)."
So it is a chipset limitation.
http://forum-en.msi.com/index.php?topic=133604.0;prev_next=next
This MSI thread describes the limitations of multiple displays.