System Process High CPU Usage Windows 11 Fix [2026]

Quick Answer: System process high CPU due to driver conflict or Windows service. Update all drivers and disable Superfetch.

Fix

Device Manager → Update all drivers

Stop-Service SysMain
Set-Service SysMain -StartupType Disabled

sfc /scannow

High interrupts indicate hardware/driver issue

Againly runs check_memory_pressure to detect system process issues.

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Instant Resolution

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Works on Windows 10 & 11 • No credit card required