This tool is the result of a reverse engineering process of the Windows service called SysMain. Time to interact with the prefetch files !
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Updated
Nov 2, 2020 - C
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sysmain
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Fix 100% disk usage on Windows 10/11 -- Task Manager shows disk at 100 for no reason. Disable SysMain Superfetch, stop Windows Search indexing, fix AHCI driver, optimize page file. Fix slow PC, disk usage stuck at 100, hard drive constantly running. SSD and HDD.
windows performance system disk tool storage optimizer windows-10 speed ssd repair fix hdd disk-usage diagnostic windows-11 sysmain superfetch 100-percent-disk slow-pc
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Jun 18, 2026
Resolve 100% disk usage errors and improve system performance on Windows 10 and 11 by disabling problematic background processes.
windows tool storage optimizer speed ssd repair fix hdd disk-usage diagnostic sysmain superfetch 100-percent-disk slow-pc
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Updated
Jun 24, 2026
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