If you could take a minute to fill in some of your profile information that would be helpful to all members of the forum
Knowing someone's location in the world can be extremely helpful, even if you just put a country.
Also remember to post any problems or questions that you have in the appropriate forums
With regards to your problem, are you using the old hard drive as your new main one or have you put it in as a secondary drive?
that was the first question I was going to ask and say u will have to format it if u want it to be the system drive with Windows, or at least do a repair on the drive to make it bootable.