Blu-Ray Disc Problem.

Hey guys, Recently i got a 50" Panasonic Vierra plasma television and a Phillips blu ray disc player, The blu ray disc player came with an HDMI cable and they said i had everything i needed to hook it up, I Figured it would just be as easy as hooking the HDMI cable from the back of the televisions HDMI port to the back of the Blu Ray players hdmi port and switching to the HDMI input channel and it would work fine. Well it doesnt work, I've been messing with this thing for over a week and just cant seem to get the Blu Ray to even show up on the HDMI screen when im pretty sure i have it hooked up right, I've gotten it to show up before but with regular AV Cables,

Could there possibly be something wrong with my televisions HDMI ports???, I've tried using a different HDMI cable and still had no picture on the HDMI channel,

Maybe it could be something wrong with the HDMI output on the Blu Ray Player???,

Any help would be greatly apreciated, Thanks.