Alienware M17XR3 HDMI-input connector does not work

I recently purchased my new Alienware M17XR3 Laptop. I have tired to connect my PS3 and my phone using different HDMI cords but the image of the connected devices shows up on my screen for about 2 seconds and then the screen goes black. I have tested these devices on my TV so know that it is not the devices or the cords. Please help.

[Update]

I have called dell and after long conversation and the technical support guy using alien contact he said that that fixing the hdmi-input problem was not his department but it was for the gaming service department(even though I told him several times throughout the conversation that it was an hdmi input problem.) He said that I would have to set it up through them. I think he might have misunderstood my problem; is it really a gaming service problem or a technical support problem? 

Alienware M17XR3

Intel Core i7 2670QM 2.2GHz

8GB Ram

1.5 GB Nvidia GTX 560M