In Linux and Unix machines, getting the uptime is quite straight forward; just type uptime on a terminal and you’ll get the uptime. But in Windows XP machine, such command does not exist.

But you can view uptime or running time with systeminfo command. Get a command prompt (Start > All Programs > Accessories > Command Prompt) and type systeminfo.

In the long output, you can find the System Up Time

Up-time (Windows XP)

Dharshin