Some advice, is that occasionally dell driver can be a pain
And it takes some patience to get it straightened out.
First find out what the actual driver is supposed to be, Look up the specs for the audio hardware in the dell user manual. If it really is API 198X, you need to know for sure. The manual can be downloaded to find out what the hardware really is.
NEXT, go to the dell website and type in the search box: API 198 drivers
Then you will get a list of downloadable drivers for that specific hardware.
I need to clue you in about dell drivers: This is what Dell does not tell you. If you search for drivers by the computer model number, on the dell website, you will be directed to a list of downloadable drivers.
But these drivers will not install unless you install "dell download manager" first!
AND this list of drivers may not include the driver you really need.
so...DON"T install the "dell download manager"
Look up the driver on the dell website by typing the hardware manufacturer (not the computer model) into the search box, and find the list of drivers for that specific audio hardware.
These drivers will not be listed with the drivers under the computer model number.
Now download that hardware driver and save to the desktop.
Double click the speaker icon in the lower right hand of the desktop, this will bring up the mixer, or single click to bring up the volume control.
But in case the volume is missing, corrupted, or the audio is otherwise non-functional:
you check whichever audio was installed:
click start, control panel, add remove programs, look at the list...
which audio software is shown on the list? delete it, restart the computer.
now visit the motherboard manufacturer or computer manufacturer's website
look up your computer drivers by model number
download the latest audio drivers, save on the desktop...
turn the antivirus off,
if you have multiple security programs installed, turn them all off
(your driver may not install if security systems are turned on)
now load your new audio driver, restart, turn the antivirus back on.
Let the forum know if that solves the problem. SGM