Monitor won't display on anything larger than 17" monitor

Posted on 2011-05-05
Last Modified: 2012-05-11
I have an odd situation.  I have a computer with a Nvidia GEforce 7300GS video card in it.  It was attached to a 23" Westinghouse monitor and after a thunderstorm it quit displaying.  I can attach it to a 17" monitor and it displays fine.  I have swapped video cards, I have swapped monitors and I can't figure out why it will not display.  I even put a different 23" monitor on it and it will not display.  I can connect it back to the 17" monitor and it will be fine.  I have changed the refresh rate and it has not helped.  Any ideas?  
Question by:rogue028
    LVL 8

    Expert Comment

    Does the 23 inch monitor work while booting up and then stop working or does it not ever show anything on the display?

    Are you using VGA on 17 inch monitor and DVI on the other monitors... or vice versa? If so you may have to change a display setting in the bios to use the other display. It's pcould be the aspect ratio that is the problem, connect the 23 inch monitor and see if it will display in safe mode.
    LVL 7

    Expert Comment

    I am assume you have change the resolution too?

    Author Comment

    The monitor is capable of both VGA and DVI and so is the card.  I have tried both on the 23" and nothing works.  The monitor doesn't ever show anything on the display.    Yes, I have changed the resolution also.  
    LVL 69

    Expert Comment

    If everything was working fine before the thunderstorm and now it doesn't, I think your card suffered from an induced voltage spike which has damaged the card.  Replace the card.

    Author Comment

    Tried replacing the video card with both a PCI and another PCIe card but nothing.  I think I'm just going to ditch the PC.  
    LVL 69

    Accepted Solution

    A voltage surge can damage the video card, motherboard, RAM, power supply or anything connected to the line coming in.  If the PC is over 5 years old, it may not be worth salvaging, depending on what you use it for.

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