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How Do I Fix 100% Disk Usage in Windows 10

Rodin LuoNov 7, 2017, 5:04:48 AM
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Sometimes, your Windows 10 may encounter abnormal lagging, which should not appear considering your PC configurations. By observing the Task Manager, you may find that disk usage rate reaches to 100%. This issue is generally called “100 percent disk usage Windows 10”, and the event log is filled up with ID 129. How does it occur? How to solve this issue?

I will show you.



Reasons and Solutions to 100 percent disk usage Windows 10

FIX 1. Fix StorAHCI.sys Driver

According to Microsoft support, Event ID 129 means the resets of the disk controller. One reason that leads to Event ID 129 is some Advanced Host Controller Interface PCI-Express (AHCI PCIe) models cause these symptoms in Windows 10 when running with the inbox StorAHCI.sys driver. Due to a firmware bug, the Solid-state drive (SSD) does not properly complete input/output when Message Signaled Interrupt (MSI) mode is enabled. As a result, Windows storage stack attempts to reset the device after a period of unresponsive read/write.

So you may just disable MSI mode via the registry to fix 100 percent disk usage Windows 10. Follow the guide below:

Step 1. Check if you are running the inbox AHCI driver (StorAHCI.sys)

Run "devmgmt.msc" and hit Enter. Under "IDE ATA/ATAPI Controllers", right-click "Standard SATA AHCI Controller" and select "Properties" from the context menu.



Under "Driver" tab, click "Driver Details". In the pop-up window if you see "storahci.sys" in the list, you are running the inbox AHCI driver.



Step 2. Disable MSI for the Controller in Registry

In the same properties window, navigate to the "Details" tab and select "Device instance path" from the Property drop-down menu. Please pay attention to the Value that starts from PCI\VEN, which will be useful later.



Run "regedit". Navigate to "HKEY_LOCAL_MACHINE\System\CurrentControlSet\Enum\PCI\<AHCI Controller>\Device Parameters\Interrupt Management\MessageSignaledInterruptProperties", where <AHCI Controller> refers to the device instance path you paid attention to. Then change the value of the MSISupported key from "1" to "0".



FIX 2. Set Energy Option to High Performance

Many users also give feedback that changing energy options from Balanced to High Performance is helpful to remove 100 disk usage Windows 10.

Please go to Power Options > Change plan settings > Change advanced power settings, choose High performance from the drop-down box and make sure all plan settings are on default.

                                              

For some unknown reasons, a particular combination of Skype and Google Chrome browser settings can cause the 100 percent disk utilization problem in Windows 10. Please do the followings to fix settings:

In Google Chrome, go to "Settings". Scroll down until you see "Advanced". Click this option and browse the settings, make sure the "Use a prediction service to load pages more quickly" is turned off.



Now it is time to rest Skype settings. First of all, make sure it is quitted from the taskbar. Then in File Explorer, open "C:\Program Files (x86)\Skype\Phone\". Right click "Skype.exe" and choose "Properties" from the pop-up menu. Then select "Edit" under "Security" tab. In the Group or user names box, select "ALL APPLICATION PACKAGES" and then check the "Write" box. Finally, you can save changes.

FIX 4: Disable SuperFetch Service

SuperFetch helps to decrease boot time and make must-load programs more efficiently. However, it is proved to be a potential cause of high disk usage Windows 10. You may stop this service to take your chance:

At Power User Menu (Win+X), choose "Command Prompt (Admin)" and allow its user account control. In the pop-up window, type "net.exe stop superfetch" and hit the Enter key.



FIX 5. Perform a Disk Check

If the above solutions do not help at all, you may consider whether there is something wrong with your hard drive. You may download MiniTool Partition Wizard Free Edition; enable its Check File System feature to know the details.



Summary

Above are the top 5 solutions to Windows 10 100% disk usage. Hope they are helpful. For more useful ways to have a try, you can read 10 Fixes for 100% Disk Usage on Windows 10 Task Manager.