How to Fix the Dreaded Error 0x0000009F: A Step-by-Step Guide You Can’t Miss!

Encountering the Error 0x0000009F on your computer can be incredibly frustrating, especially if you’re in the middle of a crucial task. This error, also known as DRIVER_POWER_STATE_FAILURE, typically indicates a problem with a driver or power management. As an expert in technology, I’ve faced this problem myself and discovered effective solutions to resolve it. In this blog post, I’ll guide you through the steps to diagnose and fix the Error 0x0000009F.

Understanding Error 0x0000009F

Error 0x0000009F is a common BSOD (Blue Screen of Death) error that occurs when a device driver is inconsistent or not compatible with Windows’ power management settings. It may cause your system to shut down or restart abruptly, leading to data loss and disrupted workflows.

Common Causes of Error 0x0000009F

• Outdated or corrupted device drivers
• Incomplete or problematic software installations
• Hardware issues
• Power settings conflicts
• Malware or virus infections

Step-by-Step Guide to Fix Error 0x0000009F

Step 1: Update Device Drivers

Outdated or corrupted drivers are the most common culprits behind Error 0x0000009F. Updating them can often resolve the issue.

• Press Win + X and select Device Manager.
• Locate any devices with a yellow exclamation mark or a red cross next to them.
• Right-click on the device and select Update Driver.
• Follow the on-screen instructions to complete the update.

Step 2: Adjust Power Settings

Power management settings can sometimes conflict with drivers, leading to Error 0x0000009F. Adjusting these settings can be beneficial.

• Press Win + R, type control and press Enter.
• Navigate to Hardware and Sound > Power Options.
• Choose Change plan settings next to your selected power plan.
• Select Change advanced power settings.
• Expand PCI Express and set it to Off.

Step 3: Uninstall Recent Software

If you started experiencing the error after installing new software, it’s wise to examine these applications.

• Press Win + R, type appwiz.cpl and press Enter.
• Sort the applications by Install Date.
• Right-click on the suspect software and select Uninstall.

Step 4: Run System File Checker and DISM

Corrupted system files can cause various errors including 0x0000009F. Running these tools can help repair such files.

• Open Command Prompt as Administrator.
• Type sfc /scannow and press Enter.
• After the scan completes, run DISM /Online /Cleanup-Image /RestoreHealth to fix Windows image.

Step 5: Check for Malware

Malware and viruses could disrupt your system’s functionality. Run a full system scan using your antivirus software.

Step 6: Perform a Clean Boot

A clean boot helps in isolating the software that might be causing the error. Here’s how to do it:

• Press Win + R, type msconfig and press Enter.
• Under the Services tab, check Hide all Microsoft services and click Disable all.
• Go to the Startup tab and open Task Manager.
• Disable all startup items.
• Restart your computer.

Frequently Asked Questions (FAQs)

What is Error 0x0000009F?

Error 0x0000009F, also known as DRIVER_POWER_STATE_FAILURE, is a BSOD error that typically involves driver or power management issues.

Can updating drivers fix Error 0x0000009F?

Yes, outdated or corrupted drivers are common causes of this error. Updating them can often resolve the issue.

How do I adjust power settings to fix the error?

You can navigate to Hardware and Sound > Power Options in the Control Panel, select your power plan, and modify advanced settings such as PCI Express.

By following these steps, you should be able to diagnose and fix Error 0x0000009F, allowing your system to function smoothly once again. Always ensure your drivers and OS are updated and avoid installing unverified software to prevent such issues in the future. If the problem persists, consider consulting a professional technician.