Hardware⏱️ 2 min read📅 2026-05-29
How to Fix error 43 Error – error 43 Device Manager Unknown Device Error 43
Resolve Windows error code 43: Device Manager Unknown Device Error 43 with this step-by-step guide.
Quick Answer: Update device drivers and restart your computer to fix the issue.
📋 Table of Contents
Error 43 in the Device Manager indicates that a hardware component is not functioning properly. To resolve this issue, you'll need to update the device driver or disable the device if it's not essential for your system's operation.
⚠️ Common Causes
- Outdated device drivers
- Corrupted or missing device drivers
🛠️ Step-by-Step Fixes
Method 1: Quick Fix
- Step 1: Open the Device Manager by pressing the Windows + X keys and clicking on Device Manager. In the Device Manager, expand the category that corresponds to the device causing the error.
- Step 2: Right-click on the device and select Update Driver. Follow the prompts to search for and install any available updates.
💡 Conclusion
If updating the device driver doesn't resolve the issue, you may need to disable the device or seek further assistance from a Windows expert.
❓ Frequently Asked Questions
Outdated device driversCorrupted or missing device drivers
Step 1: Open the Device Manager by pressing the Windows + X keys and clicking on Device Manager. In the Device Manager, expand the category that corresponds to the device causing the error.Step 2: Right-click on the device and select Update Driver. Follow the prompts to search for and install any av
If updating the device driver doesn't resolve the issue, you may need to disable the device or seek further assistance from a Windows expert.