Find Time and Date of Windows Installation with SystemInfo Command
April 1, 2010 | Filed under Windows;
Have you ever wondered when was the last time you installed Windows on your computer? Or probably someone gave you a lame excuse of they reformatted their computer and they can no longer find the file that they were supposed to give you because the lost it in the first place? It seems impossible to find the exact time and date of Windows installation on the computer from Control Panel or any part of Windows but in fact there is a hidden command to reveal this information without using any third party script or even software.
The command to reveal the Windows installation date and time is:
systeminfo|find /i "install"
You will need to type this in command prompt to see the results or else it will just flash and exit. A more interesting and manual way of find this information is through the registry. Navigate to the following path HKLM\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION and look for InstallDate. The given as the number of seconds since January 1, 1970. If you find yourself lazy to use the calculator, try converting the seconds to years with this online unit converter.
This method should work with all versions of Windows. We have tested it on Windows 7 and it worked perfectly.