To view the time XP Pro has been running, you can make use of a little systeminfo utility at the command line. Simply open up your command prompt by going to the Start > Accessories > Command Prompt. At the prompt, type “systeminfo” and press Enter. After a few seconds of scanning, some info will pop up tell you all kinds of stuff about your PC. Scroll up to the near the top and you will see the total uptime of your computer since your last restart.