HAL_IOMMU_INTERNAL_ERROR
It is so frustrating to hear that you are stuck in this blue screen issue –HAL_IOMMU_INTERNAL_ERROR. The HAL_IOMMU_INTERNAL_ERROR BSOD error is a serious issue, accompanied by the bugcheck code 0x000001D9.
A blue screen often indicates system crashes or some other severe issues leading the desktop to freeze and hang. If you want to figure out what makes this situation, there are some speculations related to a blue screen by which the STOP error 0x000001D9 may be triggered.
1. The device driver issues, such as corruption, outdated or incompatible versions, etc.
2. Software conflicts. Some third-party security software can make aggressive actions to interfere with system performance.
3. Malware infection. It’s one of the major reasons that can cause a blue screen because that unknown infiltration can sabotage your system files and waste your system resources.
4. Memory issues, low disk space, or problematic areas in the HDD can also make your system crash and turn out to show you a blue screen.
After knowing the reasons, the first tip you may need to try is to disconnect your connected external devices, such as external USB and other peripherals. When that additional hard drive joins the system running, it may cause some conflicts and lead to HAL_IOMMU_INTERNAL_ERROR.
You can disconnect all the drives and restart your PC to see if the blue screen happens again. If no more error happens, you can try those external devices one by one to see which one is the culprit.
Notice that with a confirmed HAL_IOMMU_INTERNAL_ERROR BSOD, Windows PC tends to perform automatic restarting, which may bring you back to the desktop and the following methods are useful. Sometimes, if restarting fails, you can go to Safe Mode for a trial.
Suggestion: Back up Data
No matter which factors lead to the BSOD error 0x000001D9, the first thing you should do, after you turn your desktop back to normal, is to perform a data backup.
You should notice that the blue screen is the result of some computer problems, which means even though the desktop has turned to normal, the rooting triggers persist. Besides, once the BSOD error is related to system problems or hardware issues, you may face the risk of losing data.
In this way, it is important to back up your important data regularly. We recommend you use MiniTool ShadowMaker – this free backup software, which allows you to easily back up files, folders, disks, and selected partitions. More than that, this software provides multiple backup solutions for computer backup.
You can choose to store your backup on an external hard drive, USB flash drive, network drive, etc. Besides, to save your storage space, you can configure your backup schemes to back up those newly-added data regularly and set a time point to start it automatically.
Now, you can download and install the software for a 30-day free trial version.
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Step 1; Launch the program and click Keep Trial to get into the interface.
Step 2: In the Backup tab, the system has been set as the backup source by default, or you can click the SOURCE section to choose other items.
Step 3: Then click the DESTINATION section to choose where to store the backup. After that, you can click Options to configure more settings, including Backup Options, Backup Scheme, and Schedule Settings.
Step 4: At last, click Back Up Now to perform the backup immediately; or choose Back Up Later to delay the task.
Furthermore, if you cannot boot your computer, even Safe Mode can’t work, you can create a bootable USB drive to boot the PC. MiniTool ShadowMaker gives you the option to finish that. Please connect your drive and go to Tools > Media Builder to create a bootable drive and run a PC from the created drive to start data backup.
For detailed steps, you can read this post: How to Back up Data without Booting Windows? Easy Ways Are Here.
After you finish the backup, you can start the next troubleshooting methods to get rid of the STOP error 0x000001D9.
Fix: HAL_IOMMU_INTERNAL_ERROR
Fix 1: Run Windows Memory Diagnostic
Want to test your computer’s RAM for problems? You can use this free memory test program – Windows Memory Diagnostic. It is comprehensive and easy to use. To run this tool, please do as follows.
Step 1: Open the Run dialog box by pressing Win + R, type mdsched.exe, and press Enter. Then the Windows Memory Diagnostic window opens.
Step 2: Click Restart now and check for problems (recommended). Once the machine restarts, the tool will launch and run the memory test.
Step 3: The tool will show you a blue screen recording the testing progress. Wait for a while until the test ends and the consuming time depends on your memory configuration.
Once the test is complete, Windows will continue to start, and after a few minutes, you may see a pop-up showing the results.
Fix 2: Check for Windows Update
Microsoft will roll out patches of new updates targeting old systems or security bugs for improvement. In this way, you may try to check for available Windows updates.
Step 1: Open Settings by pressing Win + I and click Update & Security.
Step 2: In the Windows Update tab, click Check for updates to search for available pending updates. Then download and install them to see if the blue screen issue can be resolved.
Fix 3: Update Drivers
The system of some inflicted users has been updated to the latest version but there are still some optional updates for drivers are pending. It is also important to keep your driver devices up to date because that can prevent some common problems caused by outdated or incompatible drivers, such as crashes.
Step 1: Open Windows Update and click View all optional updates from the right panel.
Step 2: Expand Driver updates, check all the pending driver updates, and click Download and install.
Alternatively, you can open Device Manager, right-click on the drive you want to update and choose to update it.
Fix 4: Scan for Virus or Malware
A virus or malware infection can attack your system and corrupt some important system files or components. It is one of the reasons why the HAL_IOMMU_INTERNAL_ERROR BSOD error happens.
You can use your antivirus to scan for potential threats if you have installed one. Alternatively, Windows Security can play a huge role in protecting against viruses. So, you may try the following steps to run a scan.
Step 1: Open Settings > Update & Security > Windows Security.
Step 2: Choose Virus & threat protection and then click Scan options > Full scan > Scan now.
Fix 5: Use Disk Cleanup
You can delete the temporary and junk files to get more free storage space, which, at the same time, can remove some corrupted data. Let’s see how to do it.
Step 1: Open the Run dialog box, type cleanmgr, and press Enter to get into Disk Cleanup.
Step 2: When a small pop-up window appears, expand the drive menu to choose a preferable drive to run a cleanup and click OK
Step 3: Another wizard will appear and you can choose the files to delete. Click OK to perform the move.
If you want to have a deeper cleanup for your system, you can click Clean up system files and choose a drive. Then choose the files you want to delete and click OK.
Furthermore, you can free up more disk space by removing all but the most recent restore point. The point should be set before HAL_IOMMU_INTERNAL_ERROR happens. In the More Options tab, click Clean up… in the System Restore and Shadow Copies section and follow the next guide to remove useless points.
If you can’t make sure which files are available for deleting, you can read this post to find the answer: What Is Safe to Delete in Disk Cleanup? Here Is the Answer.
Fix 6: Check Hard Drives for Errors
You need to make sure your hard drive still works well. After a long time running, inside a hard drive may hide some problematic areas. You can run a Windows built-in tool – CHKDSK (check disk) to scan your hard drives for system errors.
Step 1: Open File Explorer and locate and right-click on your C drive to choose Properties.
Step 2: Go to the Tools tab and click Check in the Error checking section.
Step 3: If no errors are found here, you can click Scan drive to continue the task anyway. If the tool indeed detects some errors, you can follow the instructions to fix them.
Otherwise, you may run the chkdsk commands to scan and repair your drive. MiniTool has a detailed guide to resolve your concerns: CHKDSK Commands: Fix Hard Drives Errors on Windows.
Fix 7: Run System File Checker
Apart from the Check Disk utility, you can run the System File Checker to check and troubleshoot missing or corrupted system files.
Step 1: Type Command Prompt in Search and choose Run as administrator.
Step 2: When the window opens, type sfc /scannow and press Enter to execute the command.
Step 3: You should wait for a while until the process ends. If the result tells you it fails, you can run the DISM command – DISM /Online /Cleanup-Image /RestoreHealth.
Fix 8: Remove Third-Party Antivirus
To reduce the software conflicts, you can remove some similar third-party software, especially those security programs. Some aggressive functions can make your system unable to work, leading to HAL_IOMMU_INTERNAL_ERROR.
Step 1: Open Settings > Apps and click Apps & features.
Step 2: Locate the app you want to remove and click on it to choose Uninstall > Uninstall.
You can also remove a program via the Control Panel or Start menu. Try these methods and read this post: Four Perfect Ways – How to Uninstall Programs in Windows 10.
Fix 9: Use System Restore
If all the above methods can’t resolve your issue, here, the last one, usually, can help get rid of the BSOD issue – restoring your system to the state when everything works fine.
For this method, the precondition is that you should have created a restore point before the blue screen happens. Or else, the method is not suitable for you and you can try PC reset.
Step 1: Open Control Panel and set View by: to Large icons.
Step 2: Click Recovery and then Open System Restore.
Step 3: Then follow the pop-up box to choose Next, choose a restore point, and select Next > Finish.
It is not easy to resolve a Windows STOP error, but fortunately, Microsoft offers a Get Help feature to help fix BSODs. You can search Get Help in Search and open it. Then you can type your issue in the searching box, such as troubleshooting BSOD error. It will guide you to try some methods or you can directly contact its professional support team.
Bottom Line:
After reading this post about resolving the HAL_IOMMU_INTERNAL_ERROR BSOD error, you may have known its triggers and troubleshooting methods. BSOD issues can bring some unexpected results, causing system crashes or data loss.
Apart from the methods, we also give you some advice on how to protect your data from loss. MiniTool ShadowMaker is a good choice for data backup and we have a professional team to resolve your concerns of all kinds. If you have any issues with MiniTool ShadowMaker, you can contact us via [email protected].