Windows 8 and 8.1 Forums


Issue: Main display doesn't work when HDMI is plugged

  1. #1


    Posts : 4
    Windows 8

    Issue: Main display doesn't work when HDMI is plugged


    Hi guys, just found out this place, seems to be a good forum so I try it here.

    Last night I got hold of a 27" BenQ GL2750HM, so far so good.
    I have my main display from the DVI port to HDMI port on the screen and my secondary screen is my 60" TV which is connected through HDMI port on the graphic card into the HDMI port in my reciever.

    The main scheme for my setup is like:

    - Radeon 7970 DVI > HDMI Main monitor (BenQ GL2750)
    - Radeon 7970 HDMI > HDMI Reciever (ONKYO TX-NR609)
    - ONKYO TX-NR609 > 60" TV

    So to the problem now.
    When the HDMI cable is connected to the graphic card, I need to have my TV ON in order for my main monitor, the BenQ, to work and if I turn off the TV the BenQ is getting black, like a standby mode, however, there is "no signal" to the monitor.
    This was never a problem with my other screen, I could have the HDMI cable connected to the graphic card, the TV off and the reciever OFF without the main monitor went black.

    I hope I expressed myself good enough for you too understand, if not, please reply

    Thanks in advance.

      My System SpecsSystem Spec

  2. #2


    Posts : 4
    Windows 8


    Noone got a clue?
      My System SpecsSystem Spec

  3. #3


    Manchester
    Posts : 47
    Windows 8.1 64 Bit


    All I can suggest is to make sure your card is seated properly and to reinstall your gfx drivers.
      My System SpecsSystem Spec

  4. #4


    Posts : 4
    Windows 8


    Quote Originally Posted by Simba View Post
    All I can suggest is to make sure your card is seated properly and to reinstall your gfx drivers.
    Been there, done that...
      My System SpecsSystem Spec

  5. #5


    Make sure you have right DVI to HDMI adapter, if it's a DVI-D output from video card it does not properly "translate" to HDMI, That adapter should have all the pins on it, some don't.
      My System SpecsSystem Spec

  6. #6


    Posts : 4
    Windows 8


    Quote Originally Posted by CountMike View Post
    Make sure you have right DVI to HDMI adapter, if it's a DVI-D output from video card it does not properly "translate" to HDMI, That adapter should have all the pins on it, some don't.
    Well, everything worked fine with my other monitor, so there is nothing wrong with the cables.
      My System SpecsSystem Spec

Issue: Main display doesn't work when HDMI is plugged
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