Error on T520 Screen

[Levi64]

Getting a blue screen with error 805DFF31

[70007]

Hello Levi64,

Thank you for posting your concern,

Blue Screen Error 805DFF31 on HP T520

The blue screen error with code 805DFF31 on your HP T520 typically indicates a serious system issue that needs to be addressed. Here’s how you can troubleshoot and attempt to resolve this error:

1. Understand the Issue:

   • The error code often relates to underlying hardware or driver issues. Take note of any recent hardware changes or software installations that could have triggered this error.

2. Perform a Hard Reset:

   • Power off your device and disconnect any external devices.
   • Unplug the power cable and press the power button for 15 seconds to discharge remaining power.
   • Reconnect the power cable and turn the device back on to see if the issue is resolved.

3. Check for Hardware Issues:

   • Inspect all cables and connections to ensure there are no loose components or damaged peripherals.
   • Use HP’s diagnostics tools, like the HP PC Hardware Diagnostics, to perform a check on critical components such as memory and hard drive.

4. Enter Safe Mode:

   • If possible, boot into Safe Mode. This can help you diagnose if a third-party application or service is causing the issue.
   • To do this, restart the machine and repeatedly press F8 before Windows starts, and then choose "Safe Mode" or "Safe Mode with Networking."

5. Update Drivers and BIOS:

   • Use HP Support Assistant or visit HP’s official support page for your T520 to download the latest drivers and BIOS updates, ensuring your system is up to date.

6. System Restore:

   • If the issue began after a recent change, performing a System Restore to a previous working state might resolve the problem.
   • Access "System Restore" from within Safe Mode and follow the prompts to select a restore point.

7. Run Windows Diagnostics:

   • Use Windows built-in diagnostics by running sfc /scannow in Command Prompt to check and repair corrupted system files.

8. Contact Support:

   • If these steps don’t resolve the issue, contact HP Support for more detailed troubleshooting and assistance. They may provide advanced diagnostic tools or suggest repair options.