Hello, Minh Duc Nguyen
Welcome to Microsoft Q&A
Thank you for your feedback. I understand that you are experiencing the following issue: “Can detect, can connect, but no sound, and automatically disconnects after a short time.” Here are some troubleshooting solutions:
1. Type “Device Manager” in the taskbar search box and open it.
In Device Manager, locate and expand the “Bluetooth” category.
Locate your Bluetooth adapter (typically named with “Intel,” “Realtek,” “MediaTek,” or “Bluetooth”).
Right-click the adapter and select “Properties.”
Switch to the “Power Management” tab.
Uncheck the option “Allow the computer to turn off this device to save power.”
Click “OK” to save, then restart your computer.
2. Ensure that the Windows service responsible for Bluetooth audio functionality is running.
Press the Win + R keys, type services.msc, and press Enter to open the “Services” window.
In the list, locate “Bluetooth Support Service.”
Double-click to open it, ensure that the “Startup type” is set to “Automatic,” and that the service status is “Running.” If not, first click “Start,” then set the startup type.
Next, locate the “Bluetooth Audio Gateway Service.”
Similarly, ensure that its startup type is set to “Automatic,” and that the service status is “Running.”
3. Try using Update Repair
Open Settings, System, Recovery, and select Use Update Repair.
4. Unplug all peripherals from your computer, including the power source, shut down the computer, hold down the power button for 30 seconds, and let it sit for about 15 minutes.
If none of the above methods work, it is likely a hardware issue with your computer's Bluetooth. You can test this issue using a USB headset. If the USB headset works fine, we recommend contacting a professional computer repair technician for replacement or repair.
I look forward to your feedback.
Best Regards,
Ami | Microsoft Q&A Support Specialist