a Bluetooth device is missing from the expected chooser or OS list
Nothing useful can be tested until the device or browser path is visible. Start with connection, power, permission and OS recognition before app settings.
Do not jump to the most invasive fix
Do not install unofficial driver packs or firmware from download sites just because the device is missing.
Retest the same condition
The first milestone is simple detection. Only after the device appears should you troubleshoot signal quality or app behavior.
Rule out the simple causes
- 1
Make sure the device is powered and in pairing/advertising mode.
- 2
For normal headphones, keyboards, mice, and controllers, use OS Bluetooth settings rather than Web Bluetooth.
- 3
Use DeviceOK Web Bluetooth only for compatible BLE/GATT devices.
Work through the problem in order
- 1
If the device is absent from the operating system too, focus on power, pairing mode, distance, adapter state, and Bluetooth drivers.
- 2
If it pairs in the OS but is absent from Web Bluetooth, that can be normal for unsupported profiles/services.
- 3
Remove/re-pair only after simpler checks.
If the matching DeviceOK test succeeds, prioritize the affected app, browser policy, operating-system setting, or configuration before assuming complete hardware failure.
If the same capability also fails in DeviceOK and another trusted diagnostic path, broaden the investigation to connection, operating-system/device state, official driver or firmware support, and finally hardware.