Other cards may vary. It would be appreciated if you would report if this worked for you, and the card series you got working. There are several things that you NEED to check before doing anything in this guide, as the solution could be as simple as a cord in the wrong place.
For some reason, CrossFire disables multi-monitor features. If all of this fails, either your card requires some other feature to be disabled, one of your monitors no longer works, or your card is incompatible with these steps. If your card is not affected by this, make sure it is an AMD Radeon card. If it is not, your search continues. If you have an AMD Radeon card, try the following:.
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Also, if one monitor is plugged into the on-board graphics port instead of another card, try plugging it into a second card. They try to use the same memory area, and this can screw up your entire PC. Outdated video driver can cause this issue. The best way to update your outdated drivers is by using a reliable and fast driver update tool.
We recommend you use DriverDownloader. It updates all your outdated drivers within a couple of minutes. Start Download. The refresh rate is an important setting for a monitor that refers to a number of times per second the images refreshes on the screen.
The refresh rate is measured in Hertz Hz. When you connect two monitors to Windows 10, the refresh rate of the monitors plays an important role. To resolve the issue, you need to set the same refresh rates for both monitors and see if it resolves the issue.
Here are the steps you need to follow. Windows 10 offers different presentation modes where you can duplicate your desktop to another screen or extend your desktop area. The project mode selected by default is PC screen only and this could be the reason the second monitor is not detected.
However, you have to activate the displays manually from settings. As discussed in the basic troubleshooting part, click on Project in the action center and select the Extend or Duplicate option to activate your secondary display.
Scroll down to the multiple displays section, click the drop-down menu and select the Duplicate or Extend option. If it is already set to Extend or Duplicate, change the settings to something else and then revert the changes to see if that helps. Older displays are not always good with the auto-detection feature. Fortunately, Microsoft offers a force detect feature in Windows 10 to help you find and activate connected displays. Once detected, make sure the Multiple display drop-down is set to Extend these displays or Duplicate these displays.
If you set it to Show only on 2 or Show only on 1, only one of your displays will be active. Windows 10 often automatically detects and installs drivers for a newly installed device. However, if, for some reason, the detection fails, you can manually scan for installed devices in the Device Manager. Windows will scan your system for connected devices and install the necessary drivers. Once done, your secondary monitor will detect and work without any issues. Your system may fail to detect the second monitor if you run an outdated version of the display adapter drivers.
New and OS upgraded computers come with a generic display adapter.
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