The Nvidia driver is used for the Monitor, not the audio jack on the computer.  That one normally uses the Realtek driver.  If the one on the monitor is involved, reinstall the Nvidia driver. Since we don't know what system you have, this is a general statement which fits most Dell systems.  If there is something different about your system, please provide the complete model number. Otherwise, I have no experience with an Nvidia virtual audio driver.
Hi, I was facing the "3.5 mm jack not working" issue for a long time. The 3.5 mm jack was not physically damaged. Then I found actually the driver for 3.5 mm jack was "Nvidia virtual audio driver (wave extensible)(WDM)". without this driver the 3.5mm jack doesn't work. I have searched for the driver all over the internet but coudn't find it. I have tried the official website of Nvidia but I couldn't find it. Please help me if you know from where I can download this driver. Thanks in advance.
Accidentally deleted Nvidia virtual audio driver (wave extensible)(WDM)