This usually must be done through the BIOS/UEFI settings under a menu like "Power on Alarm" or "RTC Alarm," as Windows cannot turn a PC on from a fully powered-off state without hardware-level instructions. PC On/Off Time tracking software shows working time on pc
The method to check PC On/Off Time varies depending on your operating system: PC On Off Time
However, the practical application of On-Off cycles has shifted with the advent of modern power management features. The binary distinction of "On" versus "Off" has been blurred by modes such as "Sleep" and "Hibernate." These states were designed to mitigate the downsides of the traditional power cycle—specifically, the time it takes to boot up and the energy consumed by an idle machine. Sleep mode keeps the RAM powered for a near-instant resume, while hibernation saves the system state to the hard drive to save power. These technologies attempt to offer the best of both worlds, reducing the frequency of "hard" On-Off cycles, yet they introduce their own complexities, such as driver wake failures or phantom power draw. Thus, managing PC On-Off Time is no longer a simple flip of a switch, but a decision matrix involving convenience, energy consumption, and system stability. This usually must be done through the BIOS/UEFI
For true on/off tracking, focus on 6005/6006 pairs. Note that Windows 8, 10, and 11 have (hybrid shutdown) enabled by default. This means a "shutdown" is actually a deep hibernation. In that case, Event ID 6006 will appear, but the next 6005 will show a very short boot time (because the kernel session is resumed). To get true cold boot times, disable Fast Startup in Power Options. Sleep mode keeps the RAM powered for a