Please help me - Connecting PC to TV

Hello! I have a little annoying problem with my PC - TV -combination. I recently bought a new TV, LG LG 42LS3400 (42'', FullHD). I intend to use my new TV as a duplicated computer monitor, but for some reason I haven't been able to for a connection between those two devices. My GPU (Powercolor AMD Radeon HD 6870) has a HDMI connector, so I linked those two with a HDMI cable. PC detects the TV but when I try to switch TV's input to HDMI, it gives me "no signal".

Few things I've tried:

- Reboot PC when HDMI when the cable is connected
- Adjust TV's resolution and refresh rate via GPU's software (AMD VISION Engine Control Center) to lower value
- Checked if both connectors are firmly plugged in
- Updated, unistalled & reinstalled graphics drivers
- Tried both of TV's HDMI connectors

Nothing of those have worked so far. I am running out of skill, so could somebody wiser give me some advices how I can get this piece up and running. My TV doesn't have a VGA or DVI connector so I really have no other options than HDMI link.

All help is highly appreciated! :) Someone could save my day by finding the solution to my problem!
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  1. How many HDMI ports does your HDTV have? It probably has more than one and you have to select the correct HDMI input on the HDTV.

    Also, are your video card drivers up to date? Go here if not:

    http://support.amd.com/us/Pages/AMDSupportHub.aspx

    Make sure to get the correct version for your use (32-bit or 64-bit).
  2. COLGeek said:
    How many HDMI ports does your HDTV have? It probably has more than one and you have to select the correct HDMI input on the HDTV.

    Also, are your video card drivers up to date? Go here if not:

    http://support.amd.com/us/Pages/AMDSupportHub.aspx

    Make sure to get the correct version for your use (32-bit or 64-bit).

    I updated my video card drivers earlier today when the newest version was released. It didn't help. My TV has two HDMI ports, I've tried both of them and the TV automatically detects which port is in use. It doesn't even let me to switch to HDMI port 2 if the port#1 is currently in use.
  3. Is your HDTV able to detect any other HDMI devices? Also, have you tried another HDMI cable?
  4. COLGeek said:
    Is your HDTV able to detect any other HDMI devices? Also, have you tried another HDMI cable?

    I haven't tried any other HDMI cables. I intend to buy a longer HDMI cable, but I wouldn't really like to waste my money if it doesn't work.. But I think I have no choice but to buy one.

    I haven't tried to connect any other devices to the HDTV because I have no other HDMI devices.

    What do you think, would a DVI - HDMI adapter make any difference? It costs about 10$ and the image quality wouldn't be bad either.
  5. The adapter wouldn't make a difference unless the HDMI port on your video card is defective. It would really affect video quality, but you would lose audio via the HDMI cable to the HDTV.

    So, you don't have a HDMI cable box or Blu-Ray/DVD player, or XBox/PS3 you could attach to check it out?

    If necessary, just borrow a cable to check it out (as a thought).
  6. COLGeek said:
    The adapter wouldn't make a difference unless the HDMI port on your video card is defective. It would really affect video quality, but you would lose audio via the HDMI cable to the HDTV.

    So, you don't have a HDMI cable box or Blu-Ray/DVD player, or XBox/PS3 you could attach to check it out?

    If necessary, just borrow a cable to check it out (as a thought).

    At least the HDMI port detects my TV, so I don't think that it is defective.

    Oh yes, I just remembered that my laptop has a single HDMI port and I tried to plug it to the TV without results. The laptop couldn't even detect the TV. I think that the main reason to that kind of reaction is that I haven't updated its drivers in a while. Maybe I'll do it and see what happens.

    I think that I have to borrow another cable from someone and try it. I'm afraid that it wouldn't make any difference.

    Any tips or suggestions are warmly welcome, I want to get everything working :)
  7. Really sounds like either a defective cable or HDTV......
  8. COLGeek said:
    Really sounds like either a defective cable or HDTV......

    I really hope that it is the cable that is defected. I'll try another cable next week, maybe it does something. I'll keep you updated.
  9. m having the same problem with mine and i dont know wat i can do cause the tv is brand new and so is the laptop and im geting a black screen and thats all untill i unplug the cord again
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