Thomas Sampson

Why Am I Awake?

Intro #

Ever found your computer switched on and awake, after previously leaving it in a suspended/sleeping state? The powercfg command can be used to help shed some light on what device or event last caused your PC to come alive.


powercfg /lastwake


Command Output (Example)

Wake History Count - 1
Wake History [0]
Wake Source Count - 1
Wake Source [0]
Type: Device
Instance Path: PCI\VEN_1022&DEV_1483&SUBSYS_87C01043&REV_00\3&11583659&0&19
Friendly Name:
Description: PCI-to-PCI Bridge
Manufacturer: (Standard system devices)