I have 1 ssd(with os) and two other HDD's. I found that my main HDD is the culprit to the freezing loading screen when starting up my computer of Windows 7. Now I am guessing that this HDD is the problem, but where do I go from here? The BIOS still detects the hard drive but every time I plug it in, it freezes at Windows 7 loading screen. Thank you for your suggestions. Look forward to reading them.