I know why its not booting, when I installed Windows 7 Home Premium x86 I had two hard drives, a 1TB and a 1.5TB. I had to take out the 1.5TB one to send back to western digital to get a new one, but Windows installed the bootloader to if for some reason, so now I can't boot from the drive that Windows is actually on! What can I do? I assume I have to get a bootloader on the 1TB drive somehow. Also, before you ask, the hard drive works just fine.