OK, I'm guessing now.
If you are sure you are not dealing with a hardware issue, then you may have a corrupted Master Boot Record (MBR). I don't know how that would happen on a brand new drive without doing a clone copy.
See the following articles to see how to fix the MBR:
How to use the Bootrec.exe tool in the Windows Recovery Environment to troubleshoot and repair startup issues in Windows
Run fixmbr from within Win 7
See if that helps.