原帖由： Alberto Smulders ,
After a Realtek MEDIA driver windows update no sound anymore on my Asus K53SV (Windows 7 - 64) - dreaded red cross where the speaker icon should be. 3 days insanely looking for a solution, reinstalling Realtek drivers, tried all the official Asus versions, also versions directly downloaded from Realtek. Hotkeys neither working anymore, reinstalled ATK drivers package, but didn't work either (solved by letting run "C:\Program Files (x86)\ASUS\ATK Package\ATK Hotkey\HControl.exe" under XP compatibility mode). The REAL SOLUTION to the problem finally found here: https://windowsreport.com/audio-device-disabled-windows-10/ The solution is for Windows 10, but the problem was exactly the same for my Windows 7 installation: not enough rights in the registry on HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\MMDevices\Audio\Render Gave "User" full control rights, reboot and problem solved!