While this is not advisable, it is still not out of the norm if it is for some time. However, users complain that the registry and system processes register high usage for prolonged periods. These processes typically use little resources and are essential to the PC. So, this high disk usage denotes a problem. This guide will help you fix this abnormal registry 100 percent disk usage on your PC.

What causes 100% disk usage?

The possible reasons for the registry’s high disk usage issue are so many that it might be hard to pinpoint them all. But these are some of the common ones:

Background app activities: Some background apps and processes can cause the registry and system to use 100% disk. This can be because they use the system resources to run resource-intensive processes. System services: Some critical system services like Windows Search, Prefetch, and Superfetch have also been found to cause this problem. Faulty hard disk: If your hard disk is defective, it might misbehave and give a false alarm. Issues with OS installation: In some cases, the cause of this problem can be hard to trace. To be on the safe side of things and rescue your PC from damage, you must perform a clean install of Windows 10.

How can I fix 100% disk usage on Windows 10?

1. Disable some system services

While most Windows services are there to help improve your user experience, they can sometimes lead to the registry registering high disk usage. To help curtail their effects, you need to disable them.

2. Clean boot your computer

The registry can register 100 percent disk usage on Startup due to the activities of the startup apps and processes. A clean boot disables these apps and leaves only the needed Microsoft services. Should this fix the issue, you can now start enabling the apps and processes in batches to know the problematic one

3. Delete pending or failed problem reports

Your PC sends reports of crashes and issues to the report center. However, too many reports in the queue to be sent can cause the registry or system to register high disk usage. Thus, you need to delete these reports to relieve the registry and system of the task. SPONSORED

4. Run Disk Check

The Registry high disk usage might not just be a software issue. It can also be due to problems with your hard disk. Running the Check Disk utility will check the disk for possible problems and try to fix them.

5. Run Disk Cleanup

Too many junk files on your hard disk might lead to unnecessary issues like the registry high disk usage. Using the Disk Cleanup tool helps to remove these files and optimize the memory.

6. Perform an in-place upgrade

If all the fixes above fail to solve the registry high disk usage issue, it might be best to reinstall Windows 10. Performing an in-place upgrade installs the latest OS on your PC without losing your files. This should eliminate all processes that can be causing this problem. And this signals the end of this guide. We hope our detailed solutions helped you stop the registry and system from registering high disk usage. Are you facing a similar issue to the Service Host Sysmain’s high disk usage on Windows 10? Then, check our excellent guide to fix it for good. If you have any comments or questions, feel free to write them down in the comments below.

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