If you originally received a copy of DriveClone Pro 5 with your DNS-321, we are offering a free upgrade to DriveClone Pro 7.1. This should remove any issues with Windows 7 bootup. If you would like to upgrade your software please visit
http://www.farstone.com/upgrade/OEM/dlink.php and insert the key we provided you with (on the back of your DNS-321 CD sleeve) into the field. Your email address will be requested and a new key and download link will be emailed to you.
If you have any issues with the system feel free to PM me and we will get it corrected asap.