How do I know if a computer has been opened?

1, the use of "log" method can be. Enter Eventvwr.msc in the Start menu, open Event Viewer, select System in the left window, and look for event ID 6005, 6006 events from the right system event (Event ID number 6005 indicates that the event Log service was started, that is, the boot, The same event id:6006 indicates a shutdown, and their corresponding time is the boot time and shutdown time respectively.

2, if the above method is laborious, you can use "filter" to make the content concise. Select the filter option in the View menu of Event Viewer, or create a custom view. In the Properties dialog box, select the Filter tab and check the info, warning, error three items in the event source Drop-down list, select EventLog, and then click OK, and then the The contents of the system event are much less, we can easily find the latest time of the switch machine.

3, there is also a way, in the Start menu, "Run" in the "C:windowsschedlgu.txt", in the open SchedLgU.txt file has "Task Scheduler service" started in ... and the Task Scheduler service has exited from ... Time, respectively corresponding to the boot and shutdown time.