Fix PC Keeps Waking from Sleep on Its Own

Last updated: June 8, 2025

Stop your PC from waking up from sleep on its own. Covers diagnosing the wake source with powercfg, disabling wake timers, mouse/keyboard wake, Wake-on-LAN, and Windows Update scheduler.

Overview

PC turns on by itself at night? This guide shows how to find what's waking it and disable phantom wake-ups from scheduled tasks, mouse bumps, and network activity.

What this helps with

What to expect: Easy difficulty • usually about 10 minutes.

This is one of 33 Performance & Maintenance fixes in the WindowsHelper library. The full step-by-step fix lives in the WindowsHelper app.

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