Is the Product key on the sticker still readable ?? -- IF it is you just need to download an OEM version of Windows 7 Home Premium and install from it -- when you install it might auto activate (since the MOBO is an OEM product it sometimes will auto activate without the need to enter the product key since the OEM's have company specific info written into the MOBO BIOS to activate but sometimes it will not activate properly in which case you need the Key on the sticker placed on the laptop and will need to use the phone activation (you call and enter the product key when asked and the automated computer will give you a response code to enter that should activate the install (or it will have you talk to a rep who will help you activate...