Multimedia Audio controller drivers for XP

I have two issues. I need to unistall realtek multimedia audio controller but it stays on my pc despite a reboot. When installing, it almost caused a crash. I installed it from online as a guess that it would be a fix after my second issue occurred.

Second issue is I think I need to install the now correct driver for this audio controller after mistakenly uninstalling it manually. There is no sound from my machine and a now-missing speakers icon since I uninstalled the audio controller.

The symptoms I'm getting are a yellow exclamation mark in device manager beside multimedia audio controller. It gives a "device not configured properly, code 1" error message in the controller properties. think this relates to the incorrectly installed Realtek.

I've tried updating the driver in device manager but it says can't find the software. I do have an xp operating system disc cd but when trying to install it, it says can't use because there is a newer version installed on pc and won't work.

I can provide more specs if necessary. My pc is a dell optiplex gx280 using windows XP. I've tried some softwares that search your pc for the correct missing driver which won’t cause a conflict or hassle, but these search softwares are either highly chargeable or gave me the wrong suggestion (realtek controller).