Check hdmi cable connections.
Hdmi cable not connecting to computer.
You should check whether hdmi cable is correctly inserted on your pc and monitor tv.
You can easily do it by using the cable to connect another pc with its monitor or tv.
Click the icon that resembles a gear to open the settings menu.
If not you need to replace the hdmi cable.
If it passes turn the p2717h off open the dell laptop lid.
Check the hdmi cable to see if there are any physical damages.
If this happens often consider getting locks for your hdmi cables or self locking cables.
Make sure the cable is tightly fitted at both ends.
Click the start menu on your pc.
Disconnect the hdmi cable from the dell laptop disconnect the hdmi cable and power cable from the p2717h press and hold in the p2717h power button for 10 seconds connect only the power cable to the p2717h turn the p2717h on and run bid built in diagnostics page 55 56.
If you re not getting an image on screen at all try unplugging the hdmi and plugging it back in with the tv on and if that doesn t work leave it all plugged in but turn the tv off then on.
Check the hdmi ports of your input and output devices.
Hdmi connections don t fit as tightly as a component or composite video connection and sometimes slip out.
If it gives the correct output then your cable is fine.
Unplug the hdmi cable from your computer tv reboot your computer and reattach the cable.