Speakers Work, but it shows "No audio devices are installe

An automatic update occured, and a blank box popped up continuously(Titled: C:/swsetup/sp59654/IDTSetup.exe)
I was using my USB headset during that update, then all of a sudden they stop working and only my speakers were working, and no devices were being shown under playback devices nor under recording devices.
I have show disabled/disconnected devices checked.

it sounds like a buggy sound driver download from HP , not the first time this has happened.

Try going back to a previous restore point.