Summary: Learn how to use Windows PowerShell to display last boot up time.
How can I use Windows PowerShell to find the last time a workstation booted up?
Use the WMI Class Win32_OperatingSystem and select the LastBootupTime property.
Using the Get-CimInstance cmdlet returns a properly formatted DateTime object, for example:
(Get-CimInstance Win32_operatingSystem).lastbootuptime