You have a warranty issue. Get the machine's maker to show you HDMI functioning on this unknown PC.
We can't discuss this further since I can't find the make, model or details about this PC.
Bob
I've been trying to connect my PC running Windows 7 to a Sanyo HD tv. I tested the cord and it works fine, Its not the tv because the cord works fine with other things on the same tv. The problem (I think) is that the computer isn't recognizing the monitor, because when I go into graphics properties to switch from the monitor to the tv it doesn't recognize that the tv is plugged into it. Could it be Window seven that's the problem? Could it be the graphics card? The graphics card is an ATI Radeon HD 4350 with 512 MB dedicated graphics memory, DVI and HDMI capabilities and support for BlueRay and Microsoft DirectX 10.1. Any ideas on how to make the computer recognize it?

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