Windows Thinks My Monitor Is Generic, Won't Let Me Change Resolution Solved

  1.    15 Mar 2017 #1

    Windows Thinks My Monitor Is Generic, Won't Let Me Change Resolution

    I have an Acer S201HL that I bought in 2012. My last machine had no trouble with it, but my current machine insists that it's a generic non-plug'n'play and locks the resolution to 1024x768 and grays out the resolution options so I can't change it.

    About two weeks ago, it suddenly decided to acknowledge that my monitor was widescreen and jumped my resolution straight up to 1600x900. A couple of days later, it was down to 1024x768 but I was able to change the resolution with Display Settings.

    Woke up this morning, checked the weather, all good as far as I can recall. Came back a few minutes later and bam, 1024x768 and this time it won't let me change it. I tried a restart and that didn't help.

    My cable is VGA, but the monitor also accepts DVI-D. I've got a DVI-D cable around somewhere, but I think I tried it when I got this new computer and it didn't help.

    Any thoughts? I am gathering specs on my box and will post them as I have them.

    Monitor: Acer S201HL, version bd
    OS: Windows 10 Home, 64 bit, version 1607, build 14393.953
    Machine: Lenovo, Model 10181
    CPU: Intel Core 15-4460, 3.20GHz, with 12GB RAM
    GPU: GeForce GE720, 2GB

    Edit: My machine insists the monitor is a generic non-plug'n'play.
    Last edited by tcwill00; 15 Mar 2017 at 17:38.
      My ComputerSystem Spec

  2.    15 Mar 2017 #2

    Welcome to the forum. Is it digital or analog you will need drivers for the monitior Download Windows 10 x64 drivers for Acer S201HL(Digital)
      My ComputerSystem Spec

  3.    15 Mar 2017 #3

    Edit: Thanks for the welcome!

    I downloaded and ran that executable for analog, and it tells me that I have Acer Incorporated Monitor (03/31/2010 "Ready to use." The rest of the drivers it lists as "no device present for use."

    Windows still says I have a generic non-PnP monitor and still won't let me change resolutions.

    Edit 2: I have downloaded the driver from the Acer website and attempted to install it. Windows insists that the driver for my monitor is up to date.

    I tried telling Windows to use my settings in the Color Management window. Nothing happened.

    I tried using the NVidia control app to create a custom resolution. It made a 1600x900 image scaled to the horizontal confines of the standard monitor it thinks I have.

    I have not yet found my DVI-D cable, although I have been looking.
    Last edited by tcwill00; 15 Mar 2017 at 21:23.
      My ComputerSystem Spec

  4.    23 Mar 2017 #4

    Hi there - not sure if you're having still issues are not, but I have another idea you can try. According the specs you posted in your original post, it looks like your GPU is a GeForce GT 720. I would try downloading the latest driver from Nvidia to see how that works for you.

    Drivers | GeForce

    All the best,

      My ComputerSystem Spec

  5.    25 Mar 2017 #5

    I downloaded the NVidia app and it says my NVidia drivers are up to date.

    Well, I bought a DVI-D cable and discovered that my graphics card (which is an NVidia GeForce GT 720) only has ports for VGA and HDMI, so I had to get an adapter.

    Once I had my HDMI adapted DVI-D cable connected, I discovered that my computer isn't sending a signal through it and my monitor is black.

    I can't have my VGA and DVI-D cable both connected at the same time, because there isn't space.

    I thought perhaps I needed to tell my monitor to switch to DVI, but with no VGA input it doesn't respond to anything except being turned off.
      My ComputerSystem Spec

  6.    26 Mar 2017 #6

    Turns out my adapter is male HDMI to female DVI-I, and my cable is male-male DVI-D (specifically, this one). From what I have read online, that shouldn't be a problem? Because the extra contacts in the DVI-I cable carry analog data.

    I have plugged my computer into my TV using a standard HDMI cable and it works fine, it'll even let me change resolution, so it's the cable or the monitor, and I think I can test both of those with a friend's computer soon.

    Should I go ahead and spend another $10 or so on a cable that's HDMI to DVI? Probably cheaper than a new monitor.

    I just wish I knew why the VGA port stopped cooperating.
      My ComputerSystem Spec

  7.    27 Mar 2017 #7

    Okay, my DVI cable works. My monitor can handle 16x9 on a Windows 7 machine with a VGA cable.

    So it's looking like an issue with my monitor and its DVI port that it won't accept a DVI signal.
      My ComputerSystem Spec

  8.    01 Apr 2017 #8

    Okay, I got an adapter to plug my VGA card into my HDMI socket and I was able to use the NVidia Control Panel (right click on the desktop) to create a custom 1600x900 resolution and it's working.

    So there's a solution. I just wish I knew why the VGA mode worked for 10 days.
      My ComputerSystem Spec


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