How to Fix ERROR_ABIOS_ERROR: 5 Simple Solutions

The ERROR_ABIOS_ERROR (0x21A) typically arises due to damaged ABIOS components, issues with hardware, driver conflicts, or corrupted system files.

This error is linked to the Advanced Basic Input/Output System (ABIOS), a function utilized in older IBM PS/2 systems. Although it is rare today, it may still surface if your system contains outdated hardware or legacy software applications.

Here’s how you can resolve the issue.

Steps to Resolve ERROR_ABIOS_ERROR 0x21A

Begin by rebooting your computer and ensuring that your operating system is fully updated. This straightforward step could prevent unnecessary complications. If the error persists, proceed with the advanced methods outlined below:

1. Execute an SFC scan

1. In the search bar, search for Command Prompt and choose Run as Administrator.
2. In the Command Prompt window, enter: sfc /scannow and hit Enter.
3. Allow the process to finish.

Corrupted system files can disrupt ABIOS functionality. The SFC tool is designed to scan and repair those files.

2. Launch the application in compatibility mode

1. Right-click on the application and select Properties.
2. Navigate to the Compatibility tab.
3. Check the box for Run this program in compatibility mode for: and select an earlier version of Windows.
4. Click Apply, then OK.

If you’re encountering ERROR_ABIOS_ERROR with a specific app, executing it in compatibility mode may resolve the issue, as older applications often experience problems when used on newer systems.

3. Conduct a clean boot

1. Press Win + R, type msconfig, and click OK.
2. In the Services section, check the box for Hide all Microsoft services and select Disable all.
3. Go to the Startup tab and launch Task Manager.
4. Disable all startup entries and then reboot your computer.

This process initiates your PC with only essential applications. You can gradually enable each app to determine which one is responsible for the error. When identified, consider repairing it or replacing it with a more reliable alternative.

4. Check for disk issues

1. Type CMD into the search field and select Run as administrator.
2. In Command Prompt, input chkdsk and press Enter.
3. Wait for the verification process to finish and then restart your PC.

5. Restore BIOS to default settings

1. Press the Win + I to access Settings.
2. Select Update & Security.
3. Choose Recovery from the left menu.
4. Under Advanced startup, click on Restart now.
5. Select Troubleshoot.
6. Pick Advanced options.
7. Choose UEFI Firmware Settings and hit Restart.
8. Reset all settings to default and reboot your system.

Misconfigured BIOS settings may trigger ABIOS errors. Resetting to factory defaults can help address these configuration issues.

By following these outlined methods, you should be able to resolve the ERROR_ABIOS_ERROR. Compatibility conflicts and file corruption are likely causes, so we recommend starting with these solutions.

We would love to hear which method worked for you or if you have any further inquiries, feel free to reach out!

Author: Egor Kostenko

My goal is to make complex technical topics simple and accessible. On this site, I gather unique and useful content that not only solves users’ problems but also helps them better understand the capabilities of Windows.