Laptop unable to detect audio devices
4.5
The system says "No Audio Output Device is installed".
Symptoms
- Red X on speaker icon
- Empty device list
- No sound
Possible Causes
- Disabled in BIOS
- Loose connection
- Driver missing
Step-by-Step Fix
1
Check Device Manager
Look under "Sound, video and game controllers" for disabled devices.
2
Scan for Hardware Changes
Right-click in Device Manager and select "Scan for hardware changes".
3
Check BIOS
Ensure "Onboard Audio" is enabled.
When to See a Technician
If the audio chip isn't seen by Device Manager, it's either disabled in BIOS or physically failed.
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