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What to do if the computer cannot see the monitor?

Adrian. 21. 18291 14
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
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  • #1 19126272
    Adrian. 21.
    Level 5  
    The desktop computer is functional and does not detect the monitor... None when connected to DVI, VGA and HDMI, but the 14-year-old TV works when connected to the computer.
    Two laptops work when connected to 2 monitors via any cable, but neither monitor sees the desktop computer, I will add that the computer has a dedicated graphics card. What is the cause? The words NO SIGNAL appear on the monitors
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  • #2 19126292
    Kardor
    Level 15  
    What graphics card is this? What is the native resolution of these monitors?
  • #3 19126304
    Adrian. 21.
    Level 5  
    The monitors certainly support this resolution, one LG, the other Acer, the card is NVIDIA GEFORCE GTX 745 What to do if the computer cannot see the monitor?
  • #4 19126315
    Kardor
    Level 15  
    Is the refresh rate set to a value supported by the display in the graphics card settings?
  • #5 19126327
    Adrian. 21.
    Level 5  
    What to do if the computer cannot see the monitor?
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  • #6 19126335
    Kardor
    Level 15  
    Try to change these settings, of course giving up the modes that the monitor cannot display. Interestingly, the card does not recognize monitors, except for PhilipsTV, so it can be assumed that either the connector or the card is damaged.

    Added after 3 [minutes]:

    Oh, I would have forgotten. Is the WIRE functional? Let's start with the smallest things :D
  • #7 19126349
    Adrian. 21.
    Level 5  
    After all, if the card or connector was damaged, it wouldn't repair itself when the TV was connected, from what I can see, the monitor selects the paths itself when connecting laptops with different cables and always works
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  • #8 19126364
    Kardor
    Level 15  
    But the monitor is not detected correctly by the card, it is displayed as Generic.
    Are your card drivers up to date?
  • #9 19126369
    Adrian. 21.
    Level 5  
    All drivers are the latest
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  • #10 19127792
    CrisPell
    Level 11  
    Please specify the exact models of these monitors.
  • #11 19127900
    Adrian. 21.
    Level 5  
    What to do if the computer cannot see the monitor? What to do if the computer cannot see the monitor? What to do if the computer cannot see the monitor?
    The first LG monitor has only a VGA input, it works normally on two laptops, the second monitor works on two laptops and has HDMI, DVI and VGA outputs, the third photo is a graphics card, when connected to both monitors via VGA NO SIGNAL on both monitors, after connecting via dvi (adapter) still No signal, by connecting display hdmi - hdmi still No signal, after connecting with the same cable to a 14-year-old TV everything works normally
  • #12 19127925
    CrisPell
    Level 11  
    And connect this monitor when you have an image on the TV and see if Windows is able to configure this screen.
  • #13 19127964
    Adrian. 21.
    Level 5  
    I did this.... No signal
  • #14 19128180
    amp12
    Level 14  
    Dedicated graphics card, i.e. from the motherboard, not the processor and no additional one, as I understand it. So check the BIOS settings regarding the graphics card to boot from. Signal source selected appropriately in the monitor?
  • #15 19128212
    Adrian. 21.
    Level 5  
    When connected to a laptop, the monitor works via VGA and HDMI without changing the signal source, it reads the path itself, and since the TV works normally under the computer, it means that the card has the correct settings

    Added after 7 [hours] 54 [minutes]:

    It only works via a DVI cable (double-sided), I close it
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Topic summary

The discussion revolves around a desktop computer that fails to detect two monitors while functioning correctly with a 14-year-old TV. The user has an NVIDIA GeForce GTX 745 graphics card and has tried various connections (DVI, VGA, HDMI) without success, receiving a "NO SIGNAL" message. Participants suggest checking the graphics card settings, refresh rates, and ensuring the monitors are recognized correctly. The user confirms that the monitors work with laptops and that all drivers are up to date. Further troubleshooting includes checking BIOS settings and ensuring the correct signal source is selected on the monitors. Ultimately, it is noted that the monitors only work via a DVI cable.
Summary generated by the language model.
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