Check the hdmi cable to see if there are any physical damages.
Hdmi cable not connecting to computer.
Use the tv remote to select the hdmi port connected your pc as the video source.
If it gives the correct output then your cable is fine.
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.
Check hdmi cable connections.
Purchase the right sized hdmi cable to connect your pc to your tv.
You should check whether hdmi cable is correctly inserted on your pc and monitor tv.
Unplug the hdmi cable from your computer tv reboot your computer and reattach the cable.
Click the icon that resembles a gear to open the settings menu.
Check the hdmi ports of your input and output devices.
If this happens often consider getting locks for your hdmi cables or self locking cables.
You can easily do it by using the cable to connect another pc with its monitor or tv.
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.
If not you need to replace the hdmi cable.
Connect the hdmi cable from the hdmi port on your pc to a free hdmi port on your tv.