Hello CawleyV
If this was caused by Windows Updates then you can check which were installed at Settings>Update & Security>Windows Update under Installed Updates, then uninstall them from the link there, and hide with the Hide Updates tool downloaded from here:
http://download.microsoft.com/download/f/2/2/f2...
Then restart the computer and test the sound if it does not work, do the following
1-Right-click on the Windows icon; then select Control Panel.
2-Click Hardware and Sound.
3-Under Sound, select Manage audio devices; then select Audio Device.
4-Right-click unistall device
5-Select OK.
6-Check that there is no audio device installed.
7-Then restart the computer
Now we are going to install the asus driver
1-Right-click on the Windows icon; then select Control Panel.
2-Click Hardware and Sound.
3-Under Sound, select Manage audio devices; then select Audio Device.
4-Right-click update driver
5-Select browse my computer then chose your asus driver folder
6-When the computer finishes installing the driver, restart it.
Let us know if the above instructions help.
Regards