Please do this:
Uninstall current Graphics Driver.
Reboot and Manually download and install (don’t let that auto-updater from Intel do that) Intel Graphics Driver pack 126.96.36.19963,which contains Display Audio Driver 6.16.00.3197 plus Graphics driver 188.8.131.5263.
You can find it here:https://downloadcenter.intel.com/download/26078/Intel-Graphics-Driver-for-Windows-10-and-Windows-7-8-1-15-40-
You most probably need to add a custom resolution to the Intel Graphics Driver before you will be able to select it. For connecting TV’s is best to set the Timing Standard to CVT-Reduced Blanking (RB)
Open Intel Graphics Control Panel, Chose “Custom Resolutions” (left bottom option) It will asks you if you wish to continue; YES
Standard the “Basic” setting is shown, click on “Advanced”, Fill in; Width 3840 ; Height 2160 ; Refresh Rate 60 ; Timing Standard CVT-RB ; and click on “ADD” on the right bottom of the window.
Now this resolution I added to the system and can be chosen.
Go back to “General Settings”(left top) , it will show the basic options and here you can now choose the 3840×2160 resolution and 60Hz.