Why is the Bluetooth toggle missing in Windows 11/10?

A missing Bluetooth toggle usually indicates that the Bluetooth Support Service has stopped, Windows Fast Startup loaded a corrupt kernel state, or the Bluetooth adapter experienced a driver crash (Error Code 43 or Code 10).

How do I fix Error Code 43 on a Bluetooth adapter?

To fix Error Code 43, disable Fast Startup, uninstall the Bluetooth device with driver removal checked in Device Manager, perform a full cold reboot, and install the latest official manufacturer driver (Intel, Realtek, or MediaTek).

StepDiag

Interactive Troubleshooter

Published: Aug 20, 2026

Bluetooth Not Working on Windows: Complete Step-by-Step Pairing Fix

Time: 15 mins Level: Beginner

By StepDiag Engineering Team

Reviewed by Ibraheem Taofeeq Opeyemi

Exhaustive master diagnostic guide to fix missing Bluetooth toggles, pairing failures, Error Code 43 driver bugs, audio stuttering, and connection drops on Windows 10 and Windows 11.

Related Diagnostic Guides

Startup Programs Causing Slow Boot: Complete Disable & Optimization Guide

Windows Activation Error 0xC004F074: Complete Master Fix Guide

File Explorer Crashing: Causes and Repair Steps (Complete Master Fix)