In this step-by-step tutorial, you'll learn how to fix and install an unknown device driver showing a yellow exclamation mark in Device Manager on Windows 7, Windows 10, Windows 11, and Windows 8.
If you're seeing “Unknown device” or a missing driver error in your system's Device Manager, this guide will help you identify and install the correct driver easily—without third-party software. Whether you're troubleshooting a USB device, Bluetooth adapter, network card, or any hardware with a yellow triangle, this solution works 100%.
✅ Works on:
Windows 11
Windows 10
Windows 8 / 8.1
Windows 7
📌 What You’ll Learn:
How to identify unknown device hardware IDs
How to download and install missing drivers manually
How to fix yellow triangle errors in Device Manager
How to update drivers using official sources
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00:00Hi everyone and welcome to our channel Victor Explains, in today's video is about how to fix and install an unknown device with yellow exclamation mark on Windows 7, 8, 10 and 11 device manager.
