Hello. My old computer finally gave way. I bought a used computer with Windows 7 installed on the hard drive. I removed this hd and installed my older hd that has the same os. The problem is that it doesn't boot correctly. It takes me to the configuration page. Is there a way to load Windows from this hd or do I have to use it as an alternate hd? My new computer is a Dell Precision T3400. Thank you.