HP G72 Factory Reset

Hi all! My son has a HP G72 Notebook PC

Windows 7 Home Premium (Service Pack 1)
Processor: Intel Core i3
Installed memory: 4.00 GB with 3.8 usable
System type: 64-bit

He is asking for this to be restored to "right out of the box" condition. Is this possible? Can someone please walk me through the steps?

Thank you in advance!

~Karol