Finding Time of Last Reboot

On Windows systems, such as XP, Vista, Small Business Server 2003, or Windows 7, you can determine the time a system was last booted from a command prompt using the systeminfo and find commands.

C:\>systeminfo | find "System Boot"
System Boot Time:          8/31/2009, 10:36:15 AM

For older versions of Windows, such as Windows NT or Windows 2000, you can use the uptime utility available in the Resource Kit for that version of Windows.

C:\Program Files\Reskit>uptime
\\JILL has been up for: 6 day(s), 9 hour(s), 34 minute(s), 7 second(s)

For Windows NT, you can download the uptime utility from Uptime.exe Tool Allows You to Estimate Server Availability with Windows NT 4.0 SP4 or Higher. For Windows 2000, the tool can be downloaded from Application Center 2000 - Uptime Tool.

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