Wake On LAN

Your Windows PC may wake up from sleep mode unexpectedly due to several factors, including the "wake timers" feature, network activities like "Wake on LAN," USB devices triggering wake-ups, and specific power management settings. To identify the source of these wake-ups, users can execute the command "powercfg -lastwake" in Command Prompt. If a device is causing disturbances, users can disable its ability to wake the computer through Device Manager. The Automatic Maintenance feature can also wake the system, which can be adjusted by unchecking "Allow scheduled maintenance to wake up my computer." Disabling "wake timers" can prevent scheduled tasks from waking the PC. Users can manage Windows updates by setting active hours to dictate when updates should not wake the system. If issues persist, running a scan for malware may be necessary.