Re: Guys please help windows 7 fcked!!
Put in your Windows 7 DVD, boot to it, and then select "startup repair" and it should fix the problem. It doesn't hurt to disconnect the second drive (the new one) before you start the process, just so that the repair tool doesn't think that something else is amiss.
The problem that you ran into is that the new drive wasn't formatted. Once you get back into Windows 7, shut down, plug in the new drive and boot back into 7. Once on the desktop, click start, then on the right side, RIGHT click on "computer" and choose "manage". Then on the left side, look for a subsection called disk management.
Look in here, you should see the new drive, including the Windows XP partition where it started to install. From here, you can delete the XP partition and re-format the hard drive without affecting your current Windows 7 installation.