Encountering Windows System Error Code ERROR_133 can be frustrating, especially when it disrupts your workflow or prevents you from using certain applications. This error, commonly associated with hardware or device conflicts, usually indicates that the system has detected an issue with a device attached to your PC, such as a malfunctioning driver or hardware miscommunication.
In this detailed, easy-to-follow guide, we’ll walk you through practical steps to troubleshoot and fix Windows System Error Code ERROR_133 — ensuring you get your computer back on track without the headache.
What is Windows System Error Code ERROR_133?
Before diving into the solutions, it’s essential to understand what Error 133 means. This error signals a “device not configured” or hardware resource conflict problem. It often occurs when:
- A new device driver is incompatible or corrupt.
- Hardware devices are conflicting with one another.
- System files are missing or corrupted.
- Device settings are improperly configured.
Now that we know the cause, let’s move on to how to fix it.
Step 1: Restart Your Computer
Sometimes, the simplest solution is the most effective. Before going into heavy troubleshooting, restart your PC to clear any temporary glitches or resource conflicts that might be causing Error 133.
Why?
A reboot refreshes all system processes and hardware connections, potentially resolving minor conflicts without further intervention.
Step 2: Check Device Manager for Problematic Hardware
- Press Windows Key + X and select Device Manager.
- Look for any devices marked with a yellow exclamation mark (!) or a red “X.”
- Right-click on the troubled device and select Properties.
- Check the Device status box for more details.
If the device shows Error 133 (0x85) or similar, continue with the steps below.
Step 3: Update or Reinstall the Device Driver
Faulty or outdated drivers are a common culprit behind Error 133.
How to update the driver:
- In Device Manager, right-click on the problematic device.
- Select Update driver.
- Choose Search automatically for updated driver software.
- Follow prompts to install any available updates.
- Restart your PC.
If updating doesn’t help, reinstall the driver:
- Right-click the device and select Uninstall device.
- Confirm the uninstallation.
- Reboot your computer to allow Windows to reinstall the driver from scratch.
Step 4: Run the Hardware and Devices Troubleshooter
Windows has a built-in troubleshooter designed to automatically detect and fix hardware issues.
- Press Windows Key + I to open Settings.
- Go to Update & Security > Troubleshoot > Additional troubleshooters.
- Find and run Hardware and Devices troubleshooter.
- Follow the on-screen instructions.
This process might identify and resolve conflicts causing Error 133.
Step 5: Check for Windows Updates
Microsoft regularly releases updates that fix bugs and improve hardware compatibility.
- Open Settings (Windows Key + I).
- Navigate to Update & Security > Windows Update.
- Click Check for updates.
- If updates are available, install them and restart your computer.
Step 6: Reset BIOS/UEFI to Default Settings
Sometimes, device errors can result from BIOS misconfigurations.
- Restart your PC and enter BIOS/UEFI settings (common keys: F2, DEL, ESC).
- Look for the option to Load Setup Defaults or Reset to Default.
- Save and exit BIOS.
- Boot back into Windows and check if the error persists.
Step 7: Perform a System File Check (SFC) Scan
Corrupted system files may trigger hardware detection errors.
- Type cmd in the Windows search bar.
- Right-click Command Prompt and select Run as administrator.
-
Type the following command and press Enter:
sfc /scannow
- Wait for the scan to complete — it will automatically fix any corrupted files.
- Restart your system.
Step 8: Check Hardware Connections and Compatibility
If Error 133 continues, physically inspect hardware components:
- Ensure devices (like USB drives or graphic cards) are properly connected.
- Try unplugging and replugging external devices.
- If you recently installed new hardware, verify it’s compatible with your system.
If possible, test the device on a different PC to rule out hardware failure.
Step 9: Use System Restore to Revert to a Stable State
If the error started recently after installing software or drivers, restoring your system to a previous point can help.
- Type system restore in the search bar and select Create a restore point.
- Click System Restore….
- Choose a restore point dated before the error occurred.
- Follow on-screen instructions to complete the restoration.
Step 10: Contact Technical Support or a Professional
If all else fails, and you’re still stuck with Error 133, it might be time to seek help:
- Contact your PC or device manufacturer’s support line.
- Consult a professional technician for hands-on diagnosis.
Final Thoughts
Experience shows most Windows users can resolve Error 133 by updating or reinstalling device drivers and performing simple maintenance tasks like system file scans or hardware checks. Remember to always back up your data before making significant changes.
By carefully following this step-by-step guide, you can regain a smooth-running system and avoid frustration caused by hardware conflicts.
Did this guide help you fix Windows System Error Code ERROR_133?
Feel free to share your experience or ask questions in the comments below! Your feedback helps us improve and provide better solutions for the community.
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