systeminfo | find "System Boot Time"
It analyzes existing Windows event logs, meaning it doesn't need to run in the background to collect data. Versions: Freeware: Limited to 3 weeks of history and single-PC use. PC On Off Time
If you rarely shut down your computer and prefer "Sleep" mode, the 6005/6006 codes won't tell the whole story. To see when a laptop was opened or a PC was woken up: Event ID 1: The system has resumed from sleep. Event ID 42: The system is entering sleep. systeminfo | find "System Boot Time" It analyzes
If you don’t want to click through menus, use the terminal. To see when a laptop was opened or
In this comprehensive guide, we will explore every method to check, log, and optimize your PC’s on/off schedule across Windows 10 and Windows 11.
| Event ID | Meaning | Typical Cause | |----------|---------|----------------| | 6005 | Event log started (Boot) | Normal startup | | 6006 | Event log stopped (Shutdown) | User-initiated shutdown/restart | | 6008 | Unexpected shutdown | System crash, blue screen, or power outage | | 41 | Kernel power event | System rebooted without cleanly shutting down | | 1 | Sleep entry | System entered sleep mode | | 42 | Sleep exit | System resumed from sleep | | 12 | OS boot start time | Early boot phase |