Windows 10: check the starting time of the system

Method 1:

1. Right click on the Start icon and select "Run"
2. Run "cmd" to open a terminal.
3. In the terminal run command "net stats workstation"
4. In the beginning of the output, it says: "Statistics since 2019-08-20 7:22:39 PM". The highlighted part is the last reboot time.


Method 2:

1. Right click on the task bar and select "Task Manager"
2. Click on the Performance tab, then CPU
3. At the bottom of the CPU data, it shows "UP time", e.g. "3:01:01:16". It tells you the OS has been running for 3 days 1 hour 1 minute and 16 seconds.