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Windows 10 C Drive Activity Persists at 100%
The C drive (system drive) shows 100% sustained activity in the Disk performance section of Task Manager, causing severe system lag and extremely long response delays. Standard troubleshooting steps ...
Check the SSD makers website for a tool and check if there's a firmware update available for it , I had constant 100% disk usage with my new 500gb Kingston ssd and an update solved it.