The Cool Dude wrote:
Sounds to me it's most likely a software\driver problem. Windows Update doesn't usually break anything but if there were problems on the machine to begin with, Windows Update could either fix things or make the issue worse depending on the update and what it was for.
Check your device manager to see what version of the Audio driver you have installed.
If you are still running Windows 7, then I would suggest that you install the Realtek Audio Driver from Asus:
If you have Windows 10, then get and install the Realtek Audio Driver from Realtek.