How to see the uptime (time) in Windows Server 2008 / R2 / 2012 / R2?
1. In Windows 7/8 / Server 2008, open Task Manager, and on the “Performance / Performance” to see the work Windows:
2. You need to run the command line utility systeminfo. It can be found at boot time. Open a command prompt and type:
systeminfo | find “System Boot” or systeminfo | find “Download Time”: