HDMI output not working.

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  1. Posts : 39
    Windows 7 Home Premium 64-bit
       #1

    HDMI output not working.


    My laptop crashed when removing the HDMI cable... totally dead... had to pull the battery to get it restarted. Now unfortunately the HDMI output is no longer recognizing the TV unless there is a second VGA monitor connected. Does this sound like a hardware issue?
      My Computer


  2. Posts : 6,292
    Windows 7 64 Bit Home Premium SP1
       #2

    Sure sounds like it.

    But first, go to Control Panel > Display > Change Display Settings > and click the Detect button with the HDMI connected to the TV.

    I have been operating under the assumption that you should never "hot plug" HDMI connections. Turn off the laptop and TV, connect the cable, then turn them on.
      My Computer


  3. Posts : 39
    Windows 7 Home Premium 64-bit
    Thread Starter
       #3

    Ok did that... I get "Available display output on: NVIDIA GeForce G105M" but does not detect the TV.
      My Computer


  4. Posts : 6,292
    Windows 7 64 Bit Home Premium SP1
       #4

    Mmmm. Running out of ideas. I'm not ready to say it is a hardware issue because the port does work with VGA also attached so it could still be OS, or video driver issue.

    First, with TV & PC connected and on, try looking through the nVidia Control Panel settings to see if there is a display setting you can play with.

    If no luck there, then I would try: with TV & PC connected and on, and sure that the TV is set to the correct input, restart the PC.
    Or turn the TV off and then back on.

    The purpose of this is to try and get the input and/or display signal to get recognized again.
      My Computer


  5. Posts : 39
    Windows 7 Home Premium 64-bit
    Thread Starter
       #5

    Tried tinkering with different settings in nvidia control panel and all other suggestions... even tried restoring system from a backup when everything was working fine. But, still only working with VGA attached. When I remove VGA... HDMI loses its signal. Very Puzzling.
      My Computer


  6. Posts : 1,808
    Windows 7 64b Ultimate
       #6

    Could you post a snip of your NVIDIA settings? Specifically the info under
    "Set up multiple displays" and
    "View HDCP status" ?

    Sounds like your LT got messed up as to what it's primary/main display should be...

    And please update your system specs, specially mobo, BIOS version and Graphics card etc...
      My Computer


  7. Posts : 39
    Windows 7 Home Premium 64-bit
    Thread Starter
       #7

    Ok... updated system specs. Do you want the NVIDIA snip with VGA and HDMI connected or just HDMI?
      My Computer


  8. Posts : 1,808
    Windows 7 64b Ultimate
       #8

    RockStar21 said:
    Ok... updated system specs. Do you want the NVIDIA snip with VGA and HDMI connected or just HDMI?
    With both connected please, actually better: in both cases....
    Last edited by MvdB; 23 Jul 2011 at 07:13.
      My Computer


  9. Posts : 39
    Windows 7 Home Premium 64-bit
    Thread Starter
       #9

    I noticed that the only way to have LCD and HDMI working at same time is to clone or extend desktop... when cloned, that means the HDMI is not actually running in HD right? Before the incident I could run both displays with different resolutions without extending desktop.

    See png name for state of each snip.
    Attached Thumbnails Attached Thumbnails HDMI output not working.-hdcp_vga.png   HDMI output not working.-sumd_no_vga.png   HDMI output not working.-sumd_vga_1.png   HDMI output not working.-sumd_vga_2.png  
    Last edited by RockStar21; 23 Jul 2011 at 17:03. Reason: Added info
      My Computer


  10. Posts : 1,808
    Windows 7 64b Ultimate
       #10

    RockStar21 said:
    Tried tinkering with different settings in nvidia control panel and all other suggestions... even tried restoring system from a backup when everything was working fine. But, still only working with VGA attached. When I remove VGA... HDMI loses its signal. Very Puzzling.
    Normally this happens when you cloned the two. In this case, don't. What I dont get yet.. What is the third screen in your snips?
    Make you lt screen primary and do not clone. We'll go from there....
      My Computer


 
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