![]() Double click the MSISupported key, change the value to 0 and hit ok.Īll steps done, please restart your computer and check if the problem is fixed. HKEY_LOCAL_MACHINE\System\CurrentControlSet\Enum\PCI\ \\Device Parameters\Interrupt Management\MessageSignaledInterruptProperties Type regedit in the search box of Start panel, then hit Enter to run Registry Editor. Make note of the path, starting from VEN_ From the menu, select Device Instance Path. Close the Driver Details window and go to Details tab. If you can see storahci.sys stored in a path of system32 folder, then you are running the inbox AHCI driver Locate at IDE ATA/ATAPI Controllers and double-click the AHCI controller Press Windows key and X together and choose device manager If this is the case on your computer, please try the following steps to fix the 100% disk usage issue. As a result, the Windows storage stack attempts to reset the device after waiting on unresponsive read/write for a period of time. Microsoft support shows that the known cause of this issue is that some Advanced Host Controller Interface PCI-Express (AHCI PCIe) models cause these symptoms in Windows 10 when running with the inbox StorAHCI.sys driver.ĭue to a firmware bug, the Solid-state drive (SSD) does not properly complete input/output when Message Signaled Interrupt (MSI) mode is enabled. In the case we have mentioned above, you can disable it for just 10 minutes or less to check if the problem is fixed. Generally, you can just disable your antivirus software by right clicking its icon in the system tray. For some antivirus software sometimes, it can cause the system lagging issue. If you've installed some antivirus or anti-malware programs on computer, you can temporarily disable them to see if they're the cause of your 100% disk usage problem. Or you can just right click the blank space of your task bar and choose task manager. Simply check your computer’s disk usage by typing task manager in the Windows search bar and select Task Manager, then in the Processes tab, look at the % at the top of the Disk column. Please wait for a few minutes to see if your computer starts to perform well. If the command above isn’t valid, try the other command: net.exe stop sysmain Type command: net.exe stop superfetch and hit enter The command prompt will once again display. Click YES at the User Account Control prompt Press Windows key and X together and choose Command Prompt (Admin) ![]() Here, we are offering the steps to disable SuperFetch service to fix the 100% disk usage issues. ![]() However, it has been identified as a potential cause of disk performance issues on Windows 8 and later Windows versions, especially on Windows 10. SuperFetch helps to decrease your boot time and make must-load programs more efficiently. After that, restart the program and see if it still leads to the 100% disk usage issue. Then you can simply click the related program and choose end task. In task manager, you can check what program is occupying too much disk space. Please try the solutions accordingly to make your system run normally.ġ. To fix the 100% disk usage issue, we are offering some useful tips in the following paragraphs. This issue can be caused by the overloaded of the programs, and it will influence both the hard drives and the solid-state drives. And I'm fairly sure the OS has file system notification API (change notifications, like Linux has inotify) that would remove the need to scan the file system for changes in such old fashioned and resource intense manner.Most Window users may have encountered the issue that their disk usage shows 100% in task manager, which leads to the system lagging or slow response. ![]() I presume this is Dropbox scanning the folders for changes, but I don't think it should cause this much disk activity or at least not such huge spikes for it. Since I'm the only user of this account as well, I'm the only one causing changes to it, so there's no new files being received or files being modified which are pushed to me to cause any of this either.Īlso, I don't have an anti-virus installed that performs real-time scanning on reads/writes to interfere with this. This was also verified by simply shutting down Dropbox, since the problem goes away with that. ![]() While I'm using my computer normally without touching anything Dropbox related, the Dropbox process (I have a system monitor installed that shows disk usage and which process is using it the most among other things) randomly and strangely frequently uses large amounts of my HDD's processing capacity to a point where it causes stuttering in video playback, video games, and other applications that have higher priority for my computer use. ![]()
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