Solved Cannot get PC to display on TV after updating NVIDIA driver

My wife bought a new computer which we hooked up to our TV which she would use as the computer monitor. The computer displayed on the TV just as it should, until I updated the video card driver to an NVIDIA driver. Now the computer will no longer show up on the TV, though it will still show up when connected to a computer monitor. If I hook the HDMI cord back up to the TV and restart the computer, I DO get the initial booting screen showing the motherboard logo. But once it boots into windows, the TV shows the generic “no signal” screen.
unfortunately, the graphics card that came with the computer has only one HDMI port, so I cannot have it hooked to both the TV and monitor at the same time. If I could, I could mess around with the display settings and try to get it to recognize the TV as a second display. But as it is, I have to have the HDMI hooked into the monitor to change any settings, then unhook the HDMI and plug it back into the TV which is a real pain.

Any advice or ideas as to a fix would be greatly appreciated.

It was a new computer and had no NVIDIA driver. I know the reason it isn’t working is not simply because it’s an NVIDIA driver, her old computer also had an NVIDIA GPU with the latest drivers (or nearly latest) and it displayed fine on the TV.
A driver rollback will be my last resort if I absolutely cannot get results using an updated driver.

Rustys said:

Are you positive that it has a NVIDIA card? If the new system does not have one, then installing the drivers for a nonexistent device will cause this issue.

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Yes, an NVIDIA GTX 970.

Hmmm… I got it from NVIDIA directly, as I always do. But the card is a Zotac. It’d be really odd if they had their own drivers separate from NVIDIA, but it’s worth checking out. Thanks.

Well, I tried Zotac’s website and downloaded the driver for the video card And it’s a…. Drumroll please…. An NVIDIA driver. But not the same one I got when I downloaded it from the NVIDIA website. Unfortunately, even with the new driver I get the same result. Works fine when connected to the monitor, but when hooked to the TV and then rebooted, I get the motherboard logo and BIOS prompt on the TV but as soon as it boots into Windows I get “no signal” from the TV.
processor Intel core i5-7400 CPU @ 3.00GHZ
RAM 16GB
OS Windows 11 64bit pro
Motherboard Lenovo 3102 (U3E1)
GPU NVIDIA GeForce GTX 970 (ZOTAC Internationa)

The PSU is 300 watts… I’m going to look for a better one. In the meantime I’ve rolled back the driver to the generic non-NVIDIA one that came with the compute, the PC is once again displaying on the TV (which is causing other problems because of this generic driver, not going into those here). Thank you very much for your help.