Probably the most accurate of them all, but it does require some clicking. It does not display an exact day or hour count since the last reboot, but it will display important information regarding why the computer was rebooted and when it did so. The systeminfo command line utility checks and displays various system statistics such as installation date, installed hotfixes and more. Open a Command Prompt and type the following command: systeminfo You can also narrow down the results to just the line you need: systeminfo find "System. Exe. It is a simple command line tool that analyses the computer's reliability and availability information. It can work locally or remotely. In its simple form, the tool will display the current system uptime. An advanced option allows you to access more detailed information such. First, source code was offered to several vendors, so they could adjust it to their hardware. Then products like Platform Builder (an integrated environment for Windows CE OS image creation and integration, or customized operating system designs based on CE) offered several components in source. It employs the Oxygene compiler created by RemObjects Software, which targets.NET, the.NET Compact Framework, and Mono. Its command-line compiler is available free of charge. Basic4ppc a programming language similar to Visual Basic targets the.NET Compact Framework and supports Windows CE and Windows Mobile devices.