How to Rectify the 100% Disk Usage Error on a Windows 10 Computer

How to Rectify the 100% Disk Usage Error on a Windows 10 Computer

/ James Masterson

A lot of users have faced the problem of 100% disk utilization on a Windows 10 computer, indicating that their PC’s disk consumption is 100%. This further leads to issues like an unresponsive and delayed system.

Moreover, sometimes the computer is back to normal after the user restarts it and sometimes it again shows the same problem. Many users of Windows 10 have reported this issue.

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However, now such people have a reason to rejoice since we have the solution for this. This article enumerates five different ways in which you can fix the issue of 100% disk utilization on your Windows 10 computer. Nevertheless, before we dive into the methods to rectify this issue, let us look at some pointers, which can tell you how you can identify this problem.

How to identify the 100% disk usage issue

Some symptoms signify your computer might be undergoing a problem with its disk usage. We’ve listed some tips so that you can identify such issues early on and thus fix the issue quickly.

Open ‘Task Manager’ on your computer, within it, open the ‘Processes’ or ‘Performance’ tabs. Here, you’ll see that the disk usage is 100%. This will, in turn, freeze your system until the disk utilization drops from 100%.

Task Manager

You’ll also see that the event log in your system will comprise several events, namely Event ID 129, that depicts the disk controller’s resets.

In case your Windows 10 computer has slowed down drastically even though only a few programs are open, this might be due to the 100 percent disk usage issue. This makes the hard drive of your computer to continually work around 100% and does not leave any extra capacity to execute other tasks, including the regular operating system tasks. It will make your computer unresponsive and very slow.

So, these are the symptoms of the 100% disk consumption problem. If you see any such warning signs on your computer, buckle up and rectify the 100% disk utilization issue promptly using any one of the following methods.

Five ways to fix 100% disk usage on Windows 10

We have listed five different ways that can help you in resolving the 100 percent disk consumption problem on a Windows 10 computer.

Fix #1: Fixing the StorAHCI.sys Driver

Microsoft support claims that the Event ID 129 that indicates the disk manager resets results from various factors. The most common factor for this is that the models of AHCI PCIe (Advanced Host Controller Interface PCI-Express) result in such symptoms on a Windows 10 computer when they are run with the driver of StorAHCI.sys.

Owing to one of the firmware bugs, the SSD (Solid-State Drive) is unable to input or output when the mode of MSI (Message Signaled Interrupt) is enabled. This facilitates the storage stack of Windows to reboot the PC after attending the unresponsive write or read command for some time.

Therefore, to fix the 100% disk utilization issue on your Windows 10 PC, you must disable the MSI mode through the registry before identifying whether the inbox AHCI driver is running, which you can do as follows:

Step 1:

Press the ‘Windows’ and ‘R’ buttons simultaneously so that the ‘Run’ box crops up on your computer screen. On it, you need to enter “devmgmt.msc” in the space provided and then click on ‘Enter.’

Step 2:

Within ‘IDE ATA/ATAPI Controllers,’ you need to click your mouse’s right button on ‘Standard SATA AHCI Controller’ and click on its ‘Properties.’

Step 3:

Open the tab that says ‘Driver’ and click on the ‘Driver Details’ button on that tab. If you notice ‘storahci.sys’ written in the system 32 folder path, it means that the inbox driver is running.


Step 4:

To stop MSI, you need to close the ‘Details’ tab and click on the ‘Details’ tab next to the ‘Driver’ tab. Within this tab, you must choose ‘Device instance path’ from the menu of ‘Property.’ Note the path ‘Value,’ which begins with ‘PCIVEN.’

Step 5:

Now, you must type “regedit” in the ‘Run’ box and then hit ‘Enter’ on your keyboard. This will run the Registry Editor on your PC.

Step 6:

Go to ‘ HKEY_LOCAL_MACHINESystemCurrentControlSetEnumPCI<AHCI Controller>Device ParametersInterrupt ManagementMessageSignaledInterruptProperties.’ Here, the <AHCI Controller> indicates the ‘Value’ path you noticed above.  The <Random Number> will vary for different machines.

Step 7:

Now, click on ‘MSISupported’ and enter 0 in its ‘Value data’ box. Click on ‘OK.’


Step 8:

After this, you need to restart your PC and check if this method works for you or not. If not, check out the second method for fixing the 100% disk utilization error.

Fix #2: Changing energy options

You can also change the energy options of your computer. In case, the energy is ‘Balanced,’ make it ‘High Performance.’ For this, you need to follow these steps:

Step 1:

Open the ‘Power Options’ of your PC.
Step 2:

Go to ‘Advanced settings’ from ‘Change plan settings.’

Step 3:

Within this, you need to select ‘High performance’ from the list.

Step 4:

Ensure that all the power plan settings are put on default.

Step 5:

Arrow-right, click ‘OK’ and you’re done.

Energy Options

Fix #3: Changing settings of Skype and Google Chrome

Even the settings of both Google Chrome and Skype can lead to the problem of 100% disk usage in a Windows 10 computer. You can rectify these settings as follows:

Step 1:

Open the ‘Google Chrome’ browser on your PC. Click on the three-dot icon, displayed at the top right side of your computer screen. Within this, click on ‘Settings.’ Note that different Chrome versions might have slightly different wording.

Step 2:

Go at the end of this page and then click on ‘Advanced.’

Step 3:

Within the first category of ‘Privacy and security,’ you must turn off the option of ‘Use a prediction service to load pages more quickly.’

Privacy and Security

Step 4:

Additionally, check that Skype isn’t running on your computer. For this, navigate to ‘C:Program Files (x86)SkypePhone.’

Step 5:

Select ‘Skype.exe’ and right-click on it, then select ‘Properties.’

Step 6:

Click on the ‘Security’ tab and then on ‘Edit’ within this tab.

Step 7:

Click on ‘ALL APPLICATION PACKAGES’ and check the ‘Allow’ box for the ‘Write’ option. Click on ‘Apply’ and then ‘OK’ to save the changes done by you.

All Application Packages

This should resolve the 100% disk consumption error. You can check it in the ‘Task Manager’ to verify it.

The Windows Search option allows you to search various folders on your computer quickly. In case of Windows Search is the reason behind the 100% disk utilization issue on your computer, you should disable it for some time and then check if your PC runs speedily.

In case it speeds up, you can stop Windows Search forever. You can also stop it completely if you don’t use it very often or instead use a different search app. This will discontinue the file indexation system even though you can still use the search function with longer processing time.


The temporary disabling of Windows Search option will begin it whenever you start your PC again. For disabling Windows Search temporarily, do as follows:

Step 1:

Press ‘Windows’ and ‘X’ buttons together. Choose the option of ‘Command Prompt (Admin).’
Step 2:

Select ‘Yes’ from the box of ‘User Account Control’ that appears on your computer screen.

Step 3:

You need to type in: net.exe stop “Windows search” on the black command window and then press ‘Enter’ on the keyboard.

Windows search

Now, check the performance and disk utilization of your PC as to whether it improves or not. If yes, then you can stop Windows Search forever, and if not, then you can try another method on this list.


When you notice that the 100% disk usage problem is due to your computer’s Windows Search, you can disable it forever. For disabling Windows Search option permanently, you need to do as follows:

Step 1:

Press ‘Windows’ and ‘R’ buttons concurrently and enter “services.msc.” in the space provided. Then click on ‘OK.’

Step 2:

You should right-click the option of ‘Windows Search’ and then click ‘Properties.’

Step 3:

Within the first ‘General’ tab, choose ‘Disabled’ from the drop-down menu of ‘Startup type.’ After this, click on ‘Apply’ and then ‘OK’ to save the changes done by you.

Startup Type

Fix #5: Disable the service of SuperFetch

The SuperFetch service aids in decreasing the start time and increasing the efficacy of must-load software. Nevertheless, it can also cause a disk performance problem on Windows 10. You can stop this facility as follows:

Step 1:

Press the ‘Windows’ and ‘X’ keys simultaneously on your keyboard. Click on ‘Command Prompt (Admin).’

Step 2:

Select ‘Yes’ from the box of ‘User Account Control’ that appears on your computer screen.

Step 3:

You need to type in “net.exe stop superfetch” on the black command window and then press ‘Enter’ on the keyboard.


Wait for some time and see if your PC’s performance has improved.


So, these are the five distinct ways that can help users fix 100% disk utilization issue on their Windows 10 computers. You can try all of these methods or start with the first method and stop when any technique works for you.

James Masterson
Meet the author

James is a software engineer and an information architect with keen attention to detail. He focuses on data-driven decisions, making sure that all decisions are backed up by reliable facts. His key interests include enhancing find-ability and usability of our content related to Windows 10; troubleshooting errors; and tech news. Robert is also enthusiastic about structured data, which he believes will help the world make better sense of their information in the digital age.