Question How do I enable 4k and sound on my Vizio TV? (PC HDMI connection) ? [SOLVED]

[JasonSkywalker]

Monitor: Vizio V655-J04
PC: GTX 980ti, Intel core i7-6700k
Connection: HDMI port into HDMI 1 on tv

Problem 1: No sound on HDMI input
Problem 2: No option to change to 4k resolution in NVIDIA control panel settings.

There is sound working on the TV because it works in the smartcast app input but not on the hdmi 1 input.
I've also tried different hdmi ports and they all have the same issue. I also know the HDMI cable works because I was just using it yesterday on a similar 4k TV and had no issues with it.
I've tried factory resetting the TV and disconnection and reconnecting the hdmi cable.
I checked the device manager and see that the TV could be set as an output but it's greyed out and can't be selected as the default audio output for the pc. I believe this may be the fix but I don't know how to enable it.
Any help is appreciated.

[EDIT] Problem has been solved.

 

[Lutfij]

Welcome to the forums, newcomer!

Use DDU to uninstall your all of your GPU drivers, then manually reinstall with the latest sourced from Nvidia's support site, in an elevated command, i.e, Right click installer>Run as Administrator.

 

[helpstar]

check if the TV sound/audio input is set to HDMI and not others like spdif, optical, coax or similar.
Which resolution and refresh rate did you select? Use the windows controls to set it to 2160p.
Install the latest nvidia drivers for your card from nvidia.com

 

[JasonSkywalker]

Welcome to the forums, newcomer!

Use DDU to uninstall your all of your GPU drivers, then manually reinstall with the latest sourced from Nvidia's support site, in an elevated command, i.e, Right click installer>Run as Administrator.

I tried uninstalling with DDU and reinstalled with GeForce experience, but it did not fix anything.

 

[JasonSkywalker]

check if the TV sound/audio input is set to HDMI and not others like spdif, optical, coax or similar.
Which resolution and refresh rate did you select? Use the windows controls to set it to 2160p.
Install the latest nvidia drivers for your card from nvidia.com

I have the latest NVIDIA drivers.
I'm using 1920x1080p 60 Hz refresh rate.
When I try using windows controls to change the resolution it only goes up to 1920x1080p in the dropdown menu. Can't select 4k it's not even an option, but the TV is 4k.
Also how do I set the TV sound/audio input to HDMI? It's not showing up anywhere in task manager.

 

[helpstar]

set the TV sound/audio input to HDMI? It's not showing up anywhere in task manager

I meant inside the Vizio menu

Which driver version is installed?

Update the firmware of the TV
https://support.vizio.com/s/firmware-search?language=en_US

 

[JasonSkywalker]

I meant inside the Vizio menu

Which driver version is installed?

Update the firmware of the TV
https://support.vizio.com/s/firmware-search?language=en_US

I checked in the Vizio menu and I believe the input is set to HDMI 1.
I have Digital Audio (S/PDIF) (High Definition Audio Device) Drivers up to date.
The TV firmware is also up to date.

 

[helpstar]

spdif is optical or coaxial digital audio, do you wann use this instead of HDMI?
https://en.wikipedia.org/wiki/S/PDIF

did you connect the HDMI cable to your 980TI or eventually into the motherboard of your system?

 

[JasonSkywalker]

spdif is optical or coaxial digital audio, do you wann use this instead of HDMI?
https://en.wikipedia.org/wiki/S/PDIF

I don't mind what I use, as long as the sound works. The TV HDMI option is showing up in my sound control panel in the playback devices but I can't test it or turn it on, it says it's not plugged in.

 

[helpstar]

please post some pictures of your set up, where your HDMI cable is plugged in at the PC and at the TV
upload to imgur.com and post the links