Update display driversĪ faulty Windows display driver can prevent external screens from being recognised by the computer. If the ports aren’t marked, try plugging the USB-C cable into another USB-C port on the computer to see if that does the trick. Check to see if the port is marked with a little screen or lightning icon. If you’re connecting a monitor via one of the more modern USB-C ports, you first need to check that the port is capable of carrying display information. If the computer still doesn’t acknowledge you’ve got a second screen connected, change the cable to rule out any chance of a wiring fault. Here you’ll find similar options to mirror, extend and so forth. On a Mac, click the Apple symbol in the top-left corner, choose System Preferences and then Displays. On Windows, press the Windows key and P simultaneously to bring up the display options, which include the options to extend the display across both screens, mirror what appears on both screens, or have either screen turned off and just use the other. However, if that doesn’t happen, you can try a little manual prompting. Windows and macOS should both automatically recognise when an external screen is plugged in and show the desktop.
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