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.
Hdmi cable not connecting to computer.
Unplug the hdmi cable from your computer tv reboot your computer and reattach the cable.
Make sure the cable is tightly fitted at both ends.
You can easily do it by using the cable to connect another pc with its monitor or tv.
Use the tv remote to select the hdmi port connected your pc as the video source.
If not you need to replace the hdmi cable.
Click the start menu on your pc.
If it passes turn the p2717h off open the dell laptop lid.
If this happens often consider getting locks for your hdmi cables or self locking cables.
Click the icon that resembles a gear to open the settings menu.
Purchase the right sized hdmi cable to connect your pc to your tv.
Check hdmi cable connections.
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.
Check the hdmi cable to see if there are any physical damages.
If it gives the correct output then your cable is fine.