The blog of Windows Wally, a Windows Support Technician helping common people solve frustrating computer problems.


Reader Question:
“Hi Wally, My son’s computer came down with this error code today. ACPI DRIVER INTERNA. Since then, it won’t start” – Danielle E., United Kingdom

Before addressing any computer issue, I always recommend scanning and repairing any underlying problems affecting your PC health and performance:

  • Step 1 : Download PC Repair & Optimizer Tool (WinThruster for Win 10, 8, 7, Vista, XP and 2000 – Microsoft Gold Certified).
  • Step 2 : Click “Start Scan” to find Windows registry issues that could be causing PC problems.
  • Step 3 : Click “Repair All” to fix all issues.

Setting up weekly (or daily) automatic scans will help prevent system problems and keep your PC running fast and trouble-free.

Wally’s Answer: The computer crashes when the ACPI Driver Internal error appears on the screen. It’s called a blue screen error because of the blue screen that appears on the screen before it restarts. Errors like this are pretty confusing but don’t worry. Once you know more about it, you will be able to take care of it.


The ACPI Driver Internal or STOP 0x000000A3 error appears and the computer restarts.

ACPI DRIVER INTERNAL - Cover - BSoD -- Windows Wally


This error might appear when ACPI finds a problem with the computer. This can be BIOS settings, an application, or an installed driver.


Here is how to fix the ACPI Driver Internal error:

Update The BIOS Driver

There is a chance that you can fix the ACPI Driver Internal error by upgrading the BIOS driver. You can do this by going to the manufacturer’s website and downloading the latest driver from there.

Last Known Good Configuration

This fix will only work on computers running Windows 7 or an older version of Windows. If the problem started after you installed a BIOS driver, then you can try starting the computer with the Last Known Good Configuration. This option should come-up when the computer restarts and you see the Advanced Boot Settings page.

In case of this error, it is usually best to take the computer to a shop and get it examined by a professional.

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Is Your PC Healthy?

I always recommend to my readers to regularly use a trusted registry cleaner and optimizer such as WinThruster or CCleaner. Many problems that you encounter can be attributed to a corrupt and bloated registry.

Happy Computing! :)

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About the Author

Windows Wally is a helpful guy. It’s just in his nature. It’s why he started a blog in the first place. He heard over and over how hard it was to find simple, plain-English solutions to Windows troubleshooting problems on the Internet. Enter: Windows Wally. Ask away, and he will answer.