Backup a Windows 7 image externally.
Boot PW CD, select 1 for Screen Res, rightclick partitions you wish to delete, OK.
Now rightclick Windows 7 partition>Resize>slide left grey border all the way to left over deleted partitions, OK.
Finally rightlick Windows 7 partition>Modify>Set to Active, OK, Apply all steps.
Now boot into Windows 7 DVD Repair console or Repair CD, click through to Recovery Tools list to run Startup Repair up to 3 separate times with reboots. Startup Repair - Run 3 Separate Times