To see if it has affected your system as well, try disabling the service as described in the instructions below. Want to disable Superfetch due to high disk usage problem in Windows? For this reason, system files typically are hidden by default and have the read-only attribute. By Rodin | Follow | Last Updated November 11, 2020. Also, high Memory usage by ntoskrnl.exe process could be another issue which can be resolved using the methods mentioned below. Step 3: In the left pane of the Registry Editor, navigate to the following directory: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\PrefetchParameters. NTOSKRNL stands for NT Operating System Kernel. Step 2: In the pop-up window, allow its changes to your PC. Method 1. That would specifically mean something on your computer is making your hard drive or disk to overwork. You can reboot the computer for the changes to take effect. Method 2. Once the check is complete and you are onto the Windows 10 startup page, you can check if the 100% disk usage issue has been resolved. To keep operating system running smooth and stable, users should not change, move, or delete these files. The paging file size can be set to a custom value by the user, but doing can lead to problems with memory compression in Windows 10, ultimately leading to 100 disk usage by the System and compressed memory process. The 100% disk usage problem can also occur if your system is infected with some malware. How to Fix High Disk Usage “Service Host Sysmain” – A computer that suddenly feels slow is usually caused by a process that is consuming a lot of resources (CPU, RAM, Disk). If you see a process called Service Host: Local System is using up all of your computer or laptop resources in Task Manager in Windows 10, 8 or 7, it's time to read this post from the beginning to the end and pick up a solution to stop Service Host: Local System from taking high disk usage, CPU usage, memory usage or too much network bandwidth. Step 2: Typeservices.mscinto the Run box and press the Enter key. Have you ever come across a situation where your Windows 10 system has gone slow or unresponsive at times? Despite that we have several solutions to 100 disk usage Windows 10 caused by system and compressed memory high disk usage, we do need to pay more attention to our computer maintain ace to avoid such an issue. The main cause for this could be due to high disk usage. Finally, click Apply followed by OK. Set the Paging File Size back to Automatic, Solution 4. The services host runs a great number of functions in the background. Next on, check the settings for Skype. In some cases, if you have tweaked the page file size for all the drives in Windows 10, then the system and compressed memory process might result in a high disk usage. Check if the issue has been resolved. on How to Fix Windows 10 disk usage 100% (System Process) on Startup, How to Set Priority for WiFi Networks on Windows 10 using Command Prompt, How to Use Windows Media Creation Tool For Windows 10 to USB, Multiple Desktops in Windows 10 – Microsoft External Link, Duplicate Multiple Desktops in Windows 10, How to Setup a virtual private network (VPN) on Android 10 – Step by Step, How to Resolve – Windows 10 Search not loading, showing blank window, How to Manage delete or remove third party app access to Google account, Azure SQL Data Sync Limitations Pricing and Alternatives. 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