Fix 100 Disk Usage Windows 10. Select power options on the next screen. Click windows key and x at the same time and go for command prompt (admin) option to run cmd.
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If the 100% disk usage problem persists, try the next method, below. But still utilization of disk is 100%. Following methods are available for all windows including windows xp, vista, 7, 8/8.1 and 10 for 100% disk usage repairing: