How to Fix NVIDIA High Definition Audio Cutting Out on YouTube Fullscreen (HDMI Audio Loss)

 

If you are using an HDMI cable to connect your PC to a monitor or TV, you may encounter an annoying issue: the moment you toggle fullscreen mode on YouTube (Chrome or Edge), your NVIDIA High Definition Audio completely disappears. Switching playback devices does nothing, and the only workaround seems to be a full system reboot.

This issue occurs because toggling fullscreen triggers a GPU display handshake reset (HDMI Handshake loss) or creates a driver conflict with the browser’s hardware acceleration pipeline.

Follow the step-by-step guide below. For over 90% of users, completing just Method 1 and Method 2 solves the problem permanently!

⚡ Quick Workarounds: Restore Audio Without Restarting

If you are in the middle of work and need sound back immediately without rebooting:

• Restart Graphics & Audio Subsystems: Press Win + Ctrl + Shift + B simultaneously. The screen will flicker and beep, forcing the HDMI audio pipeline to remount.
  
  
• Restart the Windows Audio Service: Press Win + X, select Terminal (Admin) and run:

net stop audiosrv && net start audiosrv

🛠️ Permanent Fixes (Step-by-Step)

Pro Tip: In most cases, you only need to complete Method 1 and Method 2 to permanently resolve the issue.

Method 1: Disable Hardware Acceleration in Your Browser (Recommended)

Hardware acceleration forces the GPU rendering pipeline on fullscreen transitions, which frequently crashes the HDMI audio buffer.

1. Open your browser settings (enter chrome://settings/system in Chrome or edge://settings/system in Edge).
   
   
2. Toggle off "Use graphics acceleration when available" (or "Hardware Acceleration").
   
   
3. Click Relaunch to restart the browser.
   
   

Method 2: Disable Exclusive Mode for the HDMI Audio Device

Prevents fullscreen transitions and background apps from locking or crashing the HDMI audio endpoint.

1. Press Win + R, type mmsys.cpl, and press Enter to open the legacy Sound Control Panel.
   
   
2. In the Playback tab, right-click your HDMI / NVIDIA High Definition Audio device and select Properties.
   
   
3. Go to the Advanced tab.
   
   
4. Uncheck both options under Exclusive Mode:
   
   
   • ☐ Allow applications to take exclusive control of this device
     
     
   • ☐ Give exclusive mode applications priority
     
     
5. Click Apply and OK.
   
   

Method 3: Turn Off Windows Fast Startup

Windows Fast Startup saves corrupted driver kernel states to the hibernation file, causing persistent HDMI handshake failures across reboots.

1. Open Control Panel > Hardware and Sound > Power Options.
   
   
2. Click "Choose what the power buttons do" in the left sidebar.
   
   
3. Click "Change settings that are currently unavailable".
   
   
4. Under Shutdown settings, uncheck "Turn on fast startup (recommended)" and save changes.
   
   

Method 4: Perform a Clean Install of the NVIDIA HD Audio Driver

Overwriting GPU drivers across updates can leave corrupted audio modules behind.

1. Download the latest driver package from the official NVIDIA website.
   
   
2. Run the installer and select Custom (Advanced).
   
   
3. Ensure HD Audio Driver is checked, and check the box for "Perform a clean installation".
   
   
4. Complete the setup and restart your computer.
   
   

Method 5: Disable Monitor Deep Sleep & Energy Saving

Certain monitors and Smart TVs drop signal during resolution or refresh rate handshakes when energy saving is active. Use your monitor’s physical buttons (OSD Menu) to turn off Auto Source, Deep Sleep, or Energy Saving Mode.

Disabling hardware acceleration alongside turning off Exclusive Mode should fix the audio dropout on fullscreen switches. If this guide saved you a system reboot, feel free to share it with fellow users facing the same glitch!