Otherwise, the monitor may detect no DisplayPort signal from your device. If the monitor requires you to install a driver or companion app, make sure you do so. Some external monitors have native drivers that power some components or features of the device.

Switch the cable to a different DisplayPort if the adapter has more than one port. If using a DisplayPort adapter on your computer, ensure the cable is correctly plugged into the adapter and the adapter into your computer. Use a can of compressed air to remove foreign materials from the DisplayPort on the monitor and your computer. Also, make sure there isn’t any foreign material blocking contact between the cable, your computer, and the DisplayPort monitor. Before reconnecting the cable, ensure your PC’s DisplayPort is clean and free of dirt and dust. If your DisplayPort monitor doesn’t detect a signal from your computer, unplug the cable and plug it back in. Unplug and Reconnect the DisplayPort Cable Steps to change the default display adapter vary by device, so contact the manufacturer for more information.1. For example, on some systems, you can right click your desktop and select the software associated with your additional display adapter. If your system has more than one display adapter, also called a graphics card, you can try switching your system’s default display adapter. Typical ports are HDMI, VGA, DVI, and DisplayPort. If your system has more than one video output port, try plugging your external monitor into one of the other video output ports. If those didn’t work, here are more possibilities: This can help to isolate whether the issue is with the monitor or the primary system Try using the external monitor with a different system. If the new one works, you know the previous cable was faulty. Try changing the cable connecting the external monitor.

Make sure the cable connecting your PC to your external monitor is secure. Connected docks, dongles, adapters and other hardware can cause conflicts. If you’re not seeing what you expect on the external monitor, start with basic hardware troubleshooting:ĭisconnect all accessories from your PC.

Display adapter not showing