If You want to know date and time of the Installation of your Windows then you can find out it. Its a very Simple. it will take Few second to generate system information in Command Prompt . lets Start to find out.
Follows these steps to Find Out Windows Installation Date and Time .
1. Click on Start Button and then Type CMD in Search Box and then Press Enter .
2. Now Command Prompt Opened , then Type Systeminfo and then Press Enter .
3. After that It will Take Some Time to Load System Information
4. Now Find Out Original Install Date from the List .