So I have a 2007 Macbook. 2 GB RAM, 160 GB hard drive. When powered on it will drop me in Disk Utilities and pop up a box with the following options: Retsore computer using Time Machine, Do a fresh Install of Lion, Get help online, and I forget the last option, LOL. So when I choose to install Lion it checks my Apple ID and says I have never downloaded Lion with my account. I bought the machine on eBay with Lion already installed. No disc came with the machine. So now the machine will not let me install Lion, Nor will it boot a Snow Leopard disc I have even after holding down the control or C buttons. Just defualts to the that screen with the four options. So I have a Leopard disc and a Snow lepoard disc. And all I have at my disposal are a Windows 7 machine, DVD-R discs, and a 8 GB USB stick. HOW do I get Lion reinsatalled or at least Snow Leopard? Would TransMac do the trick?