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MiloShepherd
Iron Contributor
Apr 14, 2026

Windows 11 laptop fan runs fast and loud for no reason

My laptop is on Windows 11, and the fan suddenly spins fast and gets loud even when I’m just browsing. CPU usage is low. Why is this happening?

1 Reply

  • While CPU is low, check is there are high usage on memory, disk or network? 

    If this happens only while you're browsing, try clearing out browser data, check if any browser tab is using crucial amount of memory. Nowadays browsers show these data for specific tabs, while hover on a tab.