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OverviewFix 1 — Reinstall DriverFix 2 — Audio WizardFix 3 — Audio ServiceFix 4 — ASUS Update
No audio output, missing audio device in Sound settings, or a Device Manager error under Sound, video and game controllers on the ASUS VivoBook Pro 14 OLED M3401. The AMD Ryzen 9 5900HX model uses a Realtek HD Audio codec. A Windows 11 update that replaces the Realtek driver with a generic Microsoft version is the most common cause.
Fix 1 — Reinstall Realtek Audio Driver from ASUS Support
- ASUS Support → VivoBook Pro 14 OLED M3401 → enter serial number
- Download Realtek Audio Driver (Audio category)
- Device Manager → Sound, video and game controllers → uninstall Realtek entry
- Run the ASUS Realtek installer and restart
- Test audio with speakers and headphones
Fix 2 — Install ASUS Audio Wizard
From ASUS Support for M3401, download and install ASUS Audio Wizard alongside the Realtek driver. Audio Wizard provides the speaker tuning profile for the VivoBook Pro 14 OLED and manages automatic audio device switching. Without it, the Dolby Atmos or speaker EQ may not load at startup.
Fix 3 — Restart the Windows Audio Service
Press Win + R → services.msc → Windows Audio → right-click → Restart. Also restart Windows Audio Endpoint Builder. These services must be running for any audio driver to produce sound output.
Fix 4 — Run MyASUS System Update
Open MyASUS app → Customer Service → Live Update or System Update. Run a full update scan. MyASUS can push the correct Realtek audio driver and Audio Wizard version for the VivoBook Pro 14 OLED M3401 automatically.
“Installing the Realtek Audio Driver and ASUS Audio Wizard from ASUS Support brought full audio back on my VivoBook Pro 14 OLED M3401 after a Windows 11 update removed it.” — Lailatul, Kota Bharu
Ryan holds a Computer Science degree and has spent over 15 years troubleshooting Windows hardware and driver issues across major laptop brands. He writes practical, step-by-step guides for everyday users at softwaredriverdownload.com.
Frequently Asked Questions
Why is the audio driver missing on ASUS VivoBook Pro 14 OLED M3401?
The ASUS VivoBook Pro 14 OLED M3401 uses a Realtek High Definition Audio codec. After a Windows 11 feature update, the Realtek driver is sometimes uninstalled and replaced by the generic Microsoft High Definition Audio driver, which lacks equaliser and enhancement features specific to this laptop.
How do I reinstall the audio driver on ASUS VivoBook Pro 14 OLED M3401?
Download the Realtek Audio Driver from ASUS Support for VivoBook Pro 14 OLED M3401 using your serial number. Uninstall any existing audio driver in Device Manager under Sound, video and game controllers. Run the ASUS installer and restart. The Realtek driver includes the speaker tuning profile for this OLED model.
What does the ASUS Audio Wizard do on VivoBook Pro 14 OLED M3401?
ASUS Audio Wizard provides preset equaliser profiles (music, movie, game, speech) optimised for the speaker and headphone hardware in the VivoBook Pro 14 OLED. It also manages audio switching between speakers and headphones. It must be installed alongside the Realtek driver for full audio control.
Can the Windows Audio service fix a missing audio driver on VivoBook Pro 14 OLED?
Sometimes. Press Win + R → services.msc → Windows Audio → restart the service. If the generic Microsoft HD Audio driver is installed and the Windows Audio service is running, basic audio will work but at reduced quality. Installing the Realtek driver restores full audio functionality.
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