Skip to Content

No Signal when I try to connect PC with TV from HDMI

Hi. I just bought a LG Smart Tv and I want to play PC games on TV. I have a HDMI cable but it says No signal.

No Signal when I try to connect PC with TV from HDMI

Posted on 2018-08-18 20:25:52 edited August 2018 TVs Vote Up0Vote Down
Hi. I just bought a LG Smart Tv and I want to play PC games on TV. I have a HDMI cable but it says No signal. The tv does recognize the PC when I plug  the cable in it, but it still says no signal.  
I tried it on a laptop that has Windows 8 and it worked. On the Pc it says No signal. The PC has Windows 10. 
What's the problem?
- Windows 10, nvidia gtx 560 ti
Please help!

3 Comments

  • Reply Title Icon

    RE: No Signal when I try to connect PC with TV from HDMI

    RyanRyan Administrator
    Posted on 2018-08-19 15:19:15 Vote Up-3Vote Down
    Hi.

    When the Win 10 laptop is connected, does the computer recognize that an external display is connected?

    If yes, it may be a matter of manually adjusting the output resolution to find one that's compatible.  The graphics card shows a max resolution of  2560x1600, while our TVs are mostly 3,840 x 2,160.  The TV will upscale lower resolutions, but it has to be a supported resolution.

    I would also double check that the nvidia drivers are up-to-date, and check the settings in the nvidia experience app to see if anything looks out of place (maybe the nvidia app has it's own control for extending to another screen).

    Another possibility is that the Win 10 computer isn't extending the display by default, you may need to manually tell it whether you want to extend or duplicate the display.

    Another thing to check is the cable you're using.  Your graphics card looks like it uses an HDMI mini cable, which I would guess is different than Win 8 PC, which likely uses a normal HDMI.  If the cables are different, that may explain why it works on one and not the other.  Do you have another 4k TV you can use to test if the Win 10 PC works on that?  If it doesn't work on other 4k devices either, you may need to update the cable.

    The last thing I can think of at the moment is to check the inputs on the TV.  Depending on the model, the HDMI ports may support different frequencies (HDMI 1 - 4k@60Hz, HDMI 2 - 4k@30Hz).  If yours have different frequencies, try to adjust the output frequency from the PC to match the input (this should be in the nvidia experience app).

    Let me know if any of that works!

    If all else fails, post back with your TVs model number and I'll do some more research.

    Thanks,
    ~Ryan
    LempickaAndre_psi
  • Reply Title Icon

    RE: No Signal when I try to connect PC with TV from HDMI

    LempickaLempicka Member
    Posted on 2018-08-19 18:02:34 Vote Up0Vote Down
    Hello. First of all, I'm sorry for my bad english. Thank you for your response. Yes, the computer recognizes the TV.  I can Share Videos and Pictures, but I can't project the PC Monitor.  I'm not very good at PC stuff, so I'm sorry if my informations are not that great: my Nvidia drivers are up to date, and I have checked the frequencies. On the Pc it says - 60hz so I tried it on HDMI 1. Still No Signal.

    I don't have another Smart TV so that I can try with another one. 

    I have also tried to Project - Extend or Duplicate manually. Nothing happens on the TV, still no Signal.

    Can you please tell me how to manually adjusting the output resolution? 
    My Tv Model is : LG 43LK59 2018 
    Thank you!
  • Reply Title Icon

    RE: No Signal when I try to connect PC with TV from HDMI

    RyanRyan Administrator
    Posted on 2018-08-19 19:14:48 Vote Up0Vote Down
    Hi.

    Yes, let's walk through this together.  Luckily, I'm at home, and I happen to own an LG 4k TV (55UJ7700), and my PC is Windows 10 (with an nvidia graphics card), so this should be very similar to what you see.

    Follow along with the steps I do, and post screenshots if things are different on your screen.

    1. Start with both the TV and the Computer turned on.

    2. Connect the HDMI into the TV and the computer.
    The first thing that I notice when the cable is connected to both sides is that the TV pops up a small grey box in the top right, which says "HDMI 2 now available."

    3. Switch the TV to the new "now available" input (for me, HDMI 2).
    The TV doesn't switch automatically for my PC.  This threw me off a bit, because when I turn on my gaming system, the TV automatically switches.
    The reason is that the TV and the game console are configured to use HDMI CEC (Simplink), so each can control certain functions of the other.  For example, when I turn on the game console, it also turns on the TV and my soundbar.  Using my TV remote, I can control the menus on the game console.
    However, our PCs do not have this arrangement with the TV, so we manually switch inputs.   

    * For me, I can see my computer screen with perfect resolution at this point.

    4. On your computer's desktop, in an empty space, right-click to open the context menu.  From that menu, choose Display Settings.

    It should look like this when it opens (display is in Extend mode):


    5. Be sure to click the TV display so it's highlighted blue (it should be the bigger one).  With the TV selected, scroll down a bit to find "Resolution", then click the drop-down box.
    For me, it is set to 3840 x 2160 because both my computer and my TV support that resolution.


    6. You can try some different values here, but keep in mind, there are several different aspect ratios in the resolution list, so some may look distorted (in which case it may be worth using a slightly smaller resolution, just to get the aspect ratio that doesn't distort the image).


    Post back some screenshots of what you see if this doesn't work.

    Thanks,
    ~Ryan
Sign In or Register to comment.