Every PC or laptop has a manufacture date. You can check your PC’s manufacture by 2 simple commands. Just follow below steps.
Go to start menu. Click on Run. A dialog box will appear, in that type cmd to open Command prompt.
In command prompt type Debug as shown in below pic and hit enter.
After hitting enter the pointer will blink in the next line as shown above then type DF000:FFF5 as shown below pic and hit enter.
Date of your PC appears as in the below pic. In my case it is 04/25/11.