I ran into issues with the audio on my XPS 15 9570, where the audio did not play through the speakers. I followed the steps online to uninstall and reinstall the audio driver, however, now my laptop seems to be unable to detect the audio device at all. I've tried reinstalling and rebooting a number of times. When I install the drivers, I get a message that it's an older driver than the one I currently have (which doesn't make sense, given that I'm downloading (1) what appears to be the most recent one on the Dell website, and (2) I don't seem to have a different audio driver). 

When I go into the device manager, the driver seems to be showing up under "other drivers" rather than under the audio or sound settings. 

External speakers still seem to be working. Any ideas what my issue might be, or what I may be able to try?

I'm not sure what in particular prompted the initial issue. The laptop did crash and restart last night, but audio seemed to be working fine immediately following that (i.e., last night), but not today.