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.
Hdmi cable not connecting to computer.
You can easily do it by using the cable to connect another pc with its monitor or tv.
Check hdmi cable connections.
If it passes turn the p2717h off open the dell laptop lid.
You should check whether hdmi cable is correctly inserted on your pc and monitor tv.
Click the start menu on your pc.
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 cable to see if there are any physical damages.
If this happens often consider getting locks for your hdmi cables or self locking cables.
Check the hdmi ports of your input and output devices.
Connect the hdmi cable from the hdmi port on your pc to a free hdmi port on your tv.
If it gives the correct output then your cable is fine.
Make sure the cable is tightly fitted at both ends.
Use the tv remote to select the hdmi port connected your pc as the video source.
Hdmi connections don t fit as tightly as a component or composite video connection and sometimes slip out.