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How to Fix Device Manager Error Code 43 in Windows
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Quick Answer
Device Manager Error Code 43 indicates that Windows has stopped a hardware device because it reported a problem. This can occur due to outdated or corrupt drivers, hardware malfunctions, or connection issues. Commonly affected devices include USB devices, graphics cards, network adapters, and external drives. Fixing this error usually involves updating or reinstalling drivers, checking hardware connections, running system diagnostics, or performing Windows updates.
β Why Does Error Code 43 Occur?
Possible reasons include:
- Faulty or incompatible device drivers
- Hardware failure (internal or external devices)
- Corrupt system files affecting device detection
- Power supply or USB port issues
- Windows system bugs or outdated updates
π§ Fix 1: Disconnect and Reconnect the Device
Sometimes the simplest fix is unplugging and reconnecting the device.
- Turn off your computer.
- Unplug the affected device.
- Wait 30 seconds and reconnect it to a different port if possible.
- Turn on your computer and check Device Manager.
π Fix 2: Update Device Drivers
- Press Windows + X and select Device Manager.
- Find the device showing the error (yellow triangle icon).
- Right-click β Update driver β Search automatically for drivers.
- Restart your PC after updating.
π» Fix 3: Uninstall and Reinstall Device
- Open Device Manager.
- Right-click the problem device β Uninstall device.
- Confirm uninstall, then restart your PC.
- Windows will reinstall the device automatically.
βοΈ Fix 4: Check for Windows Updates
System updates can fix bugs causing device errors.
- Open Settings β Update & Security β Windows Update.
- Click Check for updates.
- Install any available updates and restart your PC.
π§ Fix 5: Run Hardware Troubleshooter
- Open Settings β Update & Security β Troubleshoot β Additional troubleshooters.
- Select Hardware and Devices β Run the troubleshooter.
- Follow on-screen instructions and restart your computer.
π‘ Fix 6: Check Device Hardware
Persistent errors may indicate a hardware issue.
- Try connecting the device to another PC.
- For internal devices (like GPU), reseat the hardware in its slot.
- Replace the device if it fails on multiple PCs.
β Frequently Asked Questions
Can a USB port cause Error 43?
Yes, faulty or insufficient power from USB ports can trigger Error 43. Try different ports or powered hubs.
Will updating Windows fix Error 43?
Windows updates can fix driver and system bugs that may trigger the error, but hardware issues require separate troubleshooting.
Is this error dangerous?
No, it doesnβt harm your PC hardware, but affected devices may not function until resolved.
π Related Guides
Last updated: January 2026 β’ Techfix&Guides