monitor not showing up in device manager, leading to resolution issues

First, try restarting your graphics driver:

Press Windows key + Ctrl + Shift + B

If that does not work...

Press Windows key + X

Click Device Manager

Expand Display adapters

Right click the current display adapter

Click Properties

Click Driver tab

Click Rollback driver if the option is available

If not

Right click the current display adapter

Click Uninstall

Check the box that says, "Delete the driver software for this device.”

Exit Device Manager

Restart

Go to Start -> Settings -> Update & security, then Check for updates and install any available updates.

You might need to update the display driver from the manufacturer of your computers website.

If you have an nVidia, AMD ATI video card or Intel HD graphics installed, you can download the latest drivers from their website.

First, determine what type of graphics you have installed.

Press Windows key + X

Click Device Manager

Expand Display adapters

Once you have determined the graphics driver, go the vendors website and search for the driver in the download section:

Intel - Downloads for Graphics Drivers - Drivers & Software - Intel

https://downloadcenter.intel.com/product/80939/...

nVidia - http://www.nvidia.com/Download/index.aspx

AMD ATI - Download Drivers - AMD Support

http://support.amd.com/en-us/download

Some of these sites offer autodetect options.

If you recently installed the latest version of Windows 10, version 1803, keep the following in mind:

As future Windows 10 feature updates are released it will introduce incompatibility with older devices and PC's. Certain components will not support these changes as observed by some users not seeing transparency anymore or brightness functions missing. Recommendations include, rollback, block the upgrade or consider upgrading components in your system such as graphics, storage, BIOS, motherboard or purchase a new Windows 10 PC.

There seems to be some early adopter issues at this time with Windows 10 1803, if you can, I recommend you downgrade to your previous version until the Spring Creators Update matures with future cumulative updates.

Open Start > Settings > Update & security > Recovery > under Go back to my previous version of Windows 10, click Get started.

or

Press Control + Alt + Delete

Click Sign out

At the Sign In screen, hold down the shift key on your keyboard while clicking the Power button on the screen

Continue to hold down the shift key while clicking Restart

Continue to hold down the shift key until the Advanced Recovery Options menu appears

Click Troubleshoot

Click Advanced options

Click Go back to the previous version of Windows

Windows Update might attempt to upgrade to Windows 10 1803 again. See instructions how to block it:

https://www.groovypost.com/howto/block-windows-...

Hmm, I tried all these including going back to the previous version on Windows, but I'm still having the issue

I already tried that. I think the issue is related to how the monitor shows up as a generic plug and play in the device manager, and the actual monitor is under hidden devices and says that it is not plugged in.

Thanks,

Kent

Still not working. Could it be a hardware issue?

Press Windows key + X

Click Device Manager

Expand Display Adaptor

Select the Video card listed

Right click the video card then click “Update Driver”

This should give you a choice of drivers, proceed to select the oldest driver.

Then wait a minute or so while it installs the old driver

Restart.