Virtual Audio Cable Broke Main Audio Driver

how i can reinstall my main audio drivers so they stay installed and so i don't have to uninstall and reinstall them at every startup. it still says it's in use if i try to test it before reinstalling.  to reinstall it i've been going to playback devices, right click properties, click properties on the new window, change settings on the next, last window click the driver tab and uninstall. then i go to device manager and scan for changes. it's really a pita  DISREGARD THIS: ok so i've been trying to port audio from firefox to reaper + asio4all and found that i can do it with VAC. i first tried another program called virtual audio streaming but that didn't work. when i got VAC i uninstalled VAS first.  since i've had VAC installed i can't listen to anything over my monitor's speakers (have computer hooked to monitor with hdmi). if i have "Digital Audio (hdmi)" set as the default audio device, the audio won't even start. for example if a start a movie in vlc and then realize there's no sound i can't just switch the default device to something else (usually can do this) i have to stop the video select a different device and start the video again. flash stuff online just won't play until i change the device.  if i try to go to the properties of "Digital Audio (hdmi)" > advanced > and hit test it tells me the device is being used by another program. this was making me think that maybe it was because VAC was using that device to port the audio from windows or something. didn't really make complete sense but i uninstalled VAC, restarted my pc and it still does the same thing. i tried uninstalling the drivers (windows default drivers, the downloadable drivers IDT high def audio cause problems with other programs so i don't use them and would prefer not to) and restarting so they would reinstall but that did nothing.