The problem is that you've reimaged to a Logical partition from which Windows 7 cannot boot. It must have originally been on a Primary partition since the reimaged partition contains the "System Active" boot files, but they nevertheless can not start from a Logical partition now.
The solution to this is to burn to a free Partition Wizard
bootable CD, boot it, rightclick on Windows 7 partition to Modify>Convert to Primary, click OK.
Next highlight the Windows 7 disk itself on the map, from Disk tab choose Rebuild MBR, click OK. Now Apply all Steps.
Now reboot into Windows 7 to see if it will start. If not boot the Windows 7 DVD or Repair CD to run Startup Repair
a few times to repair or rewrite the System Boot files to Windows 7 partition, reconfirming first that it is Primary and marked Active.