Of course, many systems do have HDMI.
Check the audio properties and see if you can change the audio out device to DP.
I have a Dell M6500 with Displayport (no HDMI). It has a 1.0GB ATI FirePro M7820 Graphics card. I want to connect it to my Phillips 42PFL7422D 42 inch TV with HDMI. I get a great picture...but no sound with a DP to HDMI adaptor. Am I missing something? Is there a tweak I am not aware of? I updated the TV's firmware. Still no go. Man why cant Dell have HDMI? Argghhhh. Any help is greatly appreciated!

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