You need to know the uptime of a server. Windows does not provide an uptime command
With a standard installation you can use the net command to get the uptime of the server.
net statistics server
The result will output some statistical information and on the top you will find "statistics since" date and time. You can also look in the eventlog and search for eventid 6005 or 6009 registred from the EventLog.
About the Author
Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux in different European countries and different European languages. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform where he is one of the most important contributors and the main developer.