Since upgrading to Windows 10, my HDMI port no longer works at all.

[ADoig]

I can no longer use my HDMI port at all. It no longer exists as an output!

My drivers are Intel HD 4000 / NVIDIA GF 740M the laptop is an ASUS K56CB.

[EstebanA_C_Intel]

Hello, AlainJames:

Thank you for contacting the Intel Communities.

My recommendations on this would be:

-Install all windows updates in your device and test the behavior.

-You could also install this driver directly from GPU's manufacturer: http://www.nvidia.com/download/driverResults.aspx/100870/en-us NVIDIA DRIVERS GeForce Game Ready Driver WHQL

-Test your device with the generic drivers from Intel: https://downloadcenter.intel.com/download/25698/Intel-Graphics-Driver-for-Windows-7-and-8-1-and-Windows-10-15-33-?product=81499 Download Intel® Graphics Driver for Windows 7* and 8.1*, and Windows® 10 [15.33]

-Test with different HDMI cables (straight connections, no adapters).

-Use a different port in the device if available or the TV and other TV/monitor if available.

I look forward to your outcome with this.

Regards,

Esteban C