Brand New G74sx Hdmi Nt Working?

Hello Every One
I Just Recived My G74sx From Tigerdirect
I've Tried To Connect It With My 3d Panasonic Plasma Gt46 Via Hdmi Cable But It Wont Work The Plasma Just Keep Black With No Picture Or Audio Tried To Change Display Mode Fn F8 To(dual Mode,hdmi Mode) And Via Nvidia Display Setting And No Sucess
Howver In The Nvidia Display Setting It Recotnize My Panasonic Tv Also The Play Back Device But Still Not Woking I've Tried 2 Hdmi Cable With No Sucess (both Are Working With My Odl Laptop And Ps3)
So I Wish If Any One Have Any Ideia And I Hope Nothing Is Wrong In The Laptop Hardware
Thanks

ok i tested it on sony lcd and it worked !
thats weird!!

also upated gpu driver to 280.26
still no luck

 

i'll appreciate any suggestion

 

Sounds like a setting on the TV. Can you connect a different computer/laptop to the panasonic to see if that works?

 

yes my old toshiba is working also ps3 working

 

Edit: NVM re-read your original troubleshooting.

Driver updates failed to fix it too, hmm.

 

i also did this :
1-i've tried 3 diffrent hdmi cables (not working)
2-tried to uninstall reinstall nvidia driver now iam on the last ver 280 (not working)
3-tried to swetch modes from (fn)+(f8)dual mode,hdmi mode and from the nividia controll i tried making the pansonic primary main display (not working)
4-install new windows 7 64bit ver also (not working)
5-tried all hdmi ports on the panasonic (not working)
6-updated the panasonic firmware to the latest (not working)

and here is some facts :
1-all three hdmi cables working fine on the same panasonic tv when iam using my old toshiba gpu 310m
2- i tried to connect the asus via vga cable to the pansoinc and it worked so the problem only in hdmi connection

the werid thing is that i tried my asus gpu(560m) on a sony lcd 40in and it worked fine so i guess the hdmi port is fine (but work on some tv and some not working)becouse it also didnt work on 32in sony lcd which werid!

 

Maybe the Panasonic prefers a different Colorspace/Digital Color Format setting. If it's set to RGB, try YCbCr444. Also, are you connecting directly to the TV, or through an AV Receiver?

Also, BIOS 202 is out, so go grab it.

 

yes i am connecting it directly to tv ,ok i changed color format from RGB to YCbCr444 still no luck
my BIOS VER IS 201
i 've never update a bios before actully i dont know how to do it and heard that its risky so i will save it for the last

 

ok i updated the bios to 202 and still same problem

 

is it possible that this wont work unless with hdmi 1.4?
cause all my cables are 1.3 and one is high speed +ethernet

 

It could be your TV doesn't like the port + cable combo. I get my cables from monoprice and haven't had any issues.

 

iam very dispointed i've tried everything i know with no luck
tried new sony hdmi 3d cable i bought for $50
i contacted nvidia customre care they ask me to try diffrent driver versions
and ask to install some app called monitor inf that grap information about any connected tvs monitors and i sent them the result but they still cant figure this out

btw i've seen some other people with same laptop gpu haveing the same problem with diffrent tv's

i dont know if this is some gpu firmware problem or bios that couse that hdmi not to work on some tv's

 

THIS PHOTOS SHOWS THAT LAPTOP DETECT THE PANASONIC

http://www.m5zn.com/uploads2/2011/9/19/photo/091911140950xgl33y9nmhfi.jpg[/IMG]


http://www.m5zn.com/uploads2/2011/9/19/photo/091911140958lfqiifv.jpg[/IMG]



THIS ONE IS TAKEN FROM MONTOR INFO GRAPED FILE WHICH NVIDIA ASKED FOR


http://www.m5zn.com/uploads2/2011/9/19/photo/091911140900fg0r1pvuk3ichdyw.jpg[/IMG]

 

According to your 2nd pic, the 2nd display is disabled. Try enabling it.

 

hey chastity i wish if it was that simple i only displeing it to print screen

 

Hi there, I also have G74SX and yesterday faced the same problem. I invited a few friends and we wanted to watch movies on a big screen, but HDMI just didn't work. The TV (Panasonic) was detected properly and I could change resolution and refresh rates and everything, but the screen would just remain black. And the friends have come already and I was thinking how to make my PS3 play the movies from the laptop. Anyway, after several hours of googling (that's how I've come across this thread) and struggling I remembered that back at the beginning of 90s some VGA cables would not work with certain video cards and monitors unless connected in a certain way: one end of the cable must be plugged in into a monitor and the other - to the video card, and it just didn't work vice versa, no idea why. So I tried this trick, and guess what? It worked with HDMI in 2011! I'm totally lost as to WHY on Earth this should happen, but anyway, I'm glad the evening was not ruined. Hope this works in your case too.