If you’ve ever wondered just how long your PC has been continuously running without a reboot and you are using Windows, there are a couple of simple ways to obtain this information using tools built right into the OS. Method 1: Windows NT/2000 and XP Open up the command prompt (Start > Run > cmd > Enter/Ok). When the command prompt has loaded type “net stats srv” (or “net statistics server”). NT4 users (are there any, really?) need to download a special utility instead. Method 2: Windows XP and beyond Alternatively, you can use the command prompt to obtain system information, type “system info” which will also provide you with your PC’s uptime. Method 3: Windows Vista, 7 and 8 For those on Vista or Windows 7, things are a little easier (although the above will work just fine). Right click the taskbar and choose “Task Manager” or “Start Task Manager”. Head over to the “Performance” tab and on the bottom right of the window you ought to see your system uptime. In Windows 8's revamped Task Manager it looks like this: Note: This is a copy from the old TechSpot blog/tips archive. This is a much better home for this valuable tip for the years to come.