Hello,
Thank you for providing such a detailed breakdown.
Based on your description, especially the fact that a different Bluetooth speaker also fails on this specific laptop, we can isolate the problem to the computer's software configuration.
Possible Causes
- Audio Enhancement Software Conflict: OEM software (l can interfere with the Windows audio pipeline.
- Driver State Corruption: Even with the latest driver installed, the driver configuration or registry keys could be corrupted.
- Incorrect Service Configuration: The Bluetooth audio service might be failing to stay active for high-quality audio streaming (A2DP profile).
Recommended Solutions:
- Disable Audio Enhancements
- Right-click the Speaker icon in the taskbar and select Sound settings.
- Select your Bluetooth speaker from the output device list.
- In the device properties, look for Audio Enhancements and set it to Off.
- Also, search for and open any Dell/Waves audio control panels and see if you can disable all effects or processing for the Bluetooth device.
- Perform a Clean Reinstall of Bluetooth and Wi-Fi Drivers
- Go to the Dell support page for the Precision 5690 and download the latest Wi-Fi and Bluetooth drivers to your desktop.
- Open Device Manager, expand Bluetooth, right-click your Intel Bluetooth adapter, and select Uninstall device. Crucially, check the box that says "Attempt to remove the driver for this device".
- Do the same for your Wi-Fi adapter under the Network adapters category.
- Restart your computer.
- Install the Bluetooth driver you downloaded, then the Wi-Fi driver.
- Restart one more time and try again.
- Check the Bluetooth Audio Gateway Service
- Press Win + R, type services.msc, and press Enter.
- Find Bluetooth Audio Gateway Service.
- Right-click it and select Properties. Ensure its Startup type is set to Automatic. If it's not running, start it.
- Restart and test.
Check for references: Microsoft Support: Fix Bluetooth problems in Windows System File Checker: Use the System File Checker tool to repair missing or corrupted system files
Please let us know if any of these solutions work for you.