Your Device Manager: The Complete Guide

Your hardware control centre

Device Manager is one of the most powerful — and most underused — tools built into Windows. It gives you a complete overview of every hardware component connected to your PC, lets you update or roll back drivers, diagnose problems, and even disable hardware you're not using. Whether you're a casual user or a tech enthusiast, knowing how to use Device Manager is an essential skill.

How to open Device Manager

There are several ways to open Device Manager in Windows:

• Right-click the Start button and select Device Manager
• Press Windows + X and choose Device Manager from the menu
• Press Windows + R, type devmgmt.msc, and press Enter
• Search for 'Device Manager' in the Windows search bar

Understanding the Device Manager layout

When Device Manager opens, you'll see a tree-view list of all the hardware categories on your system. Each category (like Display Adapters, Network Adapters, or Sound, Video and Game Controllers) can be expanded to reveal the specific devices within it.

Devices are displayed with icons that give you an instant status update. A device with no icon decoration is working correctly. A yellow exclamation mark means there is a problem with the device or its driver. A red X means the device has been disabled. A downward arrow also indicates a disabled device. A question mark on an unknown device means Windows cannot identify it.

How to update a driver in Device Manager

1. Expand the category containing the device you want to update.
2. Right-click the device and select Update driver.
3. Choose Search automatically for updated driver software.
4. Windows will scan online and install any available updates.
5. If nothing is found, try the manufacturer's website for newer drivers.
6. Restart your PC after installation.

How to roll back a driver

If a driver update caused a new problem, you can revert to the previous version. Right-click the device in Device Manager, select Properties, go to the Driver tab, and click Roll Back Driver. Follow the prompts and restart. Note that this option is greyed out if no previous driver is stored on your system.

How to uninstall a driver

To perform a clean driver reinstall, right-click the device, select Uninstall device, and optionally tick Delete the driver software for this device for a more thorough removal. After restarting, Windows will try to reinstall the driver automatically, or you can install it manually from the manufacturer's website.

How to diagnose hardware problems

Device Manager is a powerful first stop for hardware diagnosis. If you see a yellow triangle next to a device, right-click it and open Properties. The General tab shows an error code and description. Common error codes include:

• Code 10: The device cannot start — often a driver issue
• Code 28: The drivers for this device are not installed
• Code 43: Windows has stopped this device because it has reported problems — can indicate driver or hardware failure
• Code 45: Currently not connected to the computer

Enabling and disabling devices

You can temporarily disable any hardware device through Device Manager — useful for resolving conflicts, conserving power, or disabling hardware you never use. Right-click the device and choose Disable device. To re-enable it, right-click again and choose Enable device.

Showing hidden devices

By default, Device Manager hides disconnected hardware and legacy non-Plug-and-Play devices. To reveal them, go to the View menu in Device Manager and select Show hidden devices. This can be helpful when diagnosing devices that aren't currently connected or ghost devices left over from hardware that was removed.

Final thoughts

Device Manager is your control centre for everything hardware-related on your PC. Mastering it gives you the ability to update, fix, and manage every component connected to your system. Spend a few minutes exploring it — knowing what's inside can save you hours of diagnostic time when problems arise.