How to fix Windows error code 0x0000009F

How to Fix Windows Error Code 0x0000009F

Encountering the Windows error code 0x0000009F can be a frustrating experience. This error, commonly referred to as DRIVER_POWER_STATE_FAILURE, typically arises when a driver fails to transition between power states correctly, leading to system instability and crashes. This comprehensive guide is designed to help us address this issue effectively and restore system functionality.

Understanding Error Code 0x0000009F

Error Code 0x0000009F signifies a problem with a driver during the power state transition process. It usually occurs when the system is transitioning between sleep and wake states or while shutting down. The error may be triggered by outdated drivers, incompatible hardware, or issues with the power management settings.

1. Update Device Drivers

One of the most common solutions for error code 0x0000009F is to ensure that all device drivers are up-to-date. Outdated drivers can cause conflicts and result in system errors. Here's how to update drivers:

• Open Device Manager: Press Win + X and select Device Manager.
• Expand Driver Categories: Locate the driver categories, such as Network Adapters or Display Adapters.
• Update Drivers: Right-click on each device and select Update Driver. Choose Search automatically for updated driver software.
• Reboot System: After updating, restart the computer to apply changes.

2. Check Power Settings

Improper power settings can also lead to error code 0x0000009F. Adjusting these settings can sometimes resolve the issue:

• Access Power Options: Go to Control Panel > Power Options.
• Change Plan Settings: Click on Change plan settings next to your selected power plan.
• Modify Advanced Power Settings: Click on Change advanced power settings.
• Adjust Settings: Ensure that settings under Sleep and Power buttons and lid are configured correctly. For instance, set Sleep to Never when troubleshooting.
• Apply Changes: Click Apply and then OK.

3. Perform a System File Check

Corrupted system files can contribute to the DRIVER_POWER_STATE_FAILURE error. Using the System File Checker (SFC) tool can help repair these files:

• Open Command Prompt as Administrator: Search for cmd in the Start menu, right-click Command Prompt, and select Run as administrator.
• Run SFC Scan: Type sfc /scannow and press Enter. The system will scan and attempt to repair corrupted files.
• Restart the System: Once the scan is complete, reboot the computer.

4. Check for Windows Updates

Ensure that your operating system is up-to-date, as Windows updates often include bug fixes and driver updates that can resolve error code 0x0000009F:

• Open Settings: Press Win + I to open Settings.
• Navigate to Update & Security: Click on Update & Security.
• Check for Updates: Click on Check for updates and install any available updates.
• Restart: Restart the computer to complete the update process.

5. Uninstall Recently Installed Software

If the error started occurring after installing new software, uninstalling it may resolve the issue:

• Open Programs and Features: Go to Control Panel > Programs > Programs and Features.
• Locate and Uninstall Software: Find the recently installed programs, right-click on them, and select Uninstall.
• Reboot the Computer: After uninstalling, restart the system to check if the error persists.

6. Perform a Clean Boot

A clean boot can help identify if background services or startup programs are causing the issue:

• Open System Configuration: Press Win + R, type msconfig, and press Enter.
• Select Clean Boot Option: In the System Configuration window, go to the Services tab and check Hide all Microsoft services, then click Disable all.
• Disable Startup Programs: Go to the Startup tab and open Task Manager. Disable all startup programs.
• Restart the Computer: Restart the computer and check if the issue is resolved.

7. Check Hardware for Issues

Faulty hardware components, such as RAM or hard drives, can sometimes trigger error code 0x0000009F. Run diagnostics to ensure hardware is functioning correctly:

• Run Memory Diagnostic: Type mdsched.exe in the Start menu search and select Windows Memory Diagnostic. Follow the prompts to restart and check for memory issues.
• Check Hard Drive Health: Use chkdsk by opening Command Prompt as an administrator and typing chkdsk /f /r. Press Enter and allow the system to check and repair the hard drive.

8. Restore System to Previous State

If none of the above solutions resolve the issue, consider restoring the system to a previous state when it was functioning correctly:

• Open System Restore: Type System Restore in the Start menu search and select Create a restore point. Click on the System Restore button.
• Choose Restore Point: Follow the prompts to choose a restore point before the issue began.
• Complete Restore: Confirm and proceed with the restoration process.

Conclusion

Fixing Windows error code 0x0000009F involves a systematic approach to identifying and resolving driver, power, and system issues. By following these detailed steps, we can effectively address the problem and restore system stability. Ensuring that drivers are updated, power settings are correctly configured, and performing regular system maintenance can help prevent the recurrence of this error. For persistent issues, professional support may be necessary to diagnose and resolve complex underlying problems.