Forum Discussion
Poppysanna
Jun 08, 2026Copper Contributor
What to do if High Windows CPU Usage?
My Windows computer is experiencing very high CPU usage that stays at 90 to 100 percent constantly even when I have no applications open. The system becomes sluggish and unresponsive and the fans...
Marabte
Jun 09, 2026Copper Contributor
Since Task Manager's numbers don't add up, you need a deeper tool. Process Explorer (a free, official Microsoft tool) reveals what Task Manager hides, including processes that cloak themselves.