How many thousands of boot repairs do we need to do before badged members who help in these threads pick up the basic steps?
When the System
flag - which signifies where the boot files have been placed - is on a data partition it has been incorrectly derailed there during install or repairs, likely because it was the first partition marked Active. The installer or Startup Repair will (re)write the System boot files to the first Active partition.
To correct this, mark the Win7 partition (or it's System Reserved partition if it is present) Active in Disk Mgmt or using Diskpart: Partition - Mark as Active
Then to write the System boot files to the Active partition run Startup Repair - Run 3 Separate Times
until Win7 starts and holds the System Active flags.
If it will not mark Active it is likely a Logical partition which needs conversion to Primary first using Partition Wizard CD. PW also has a cool new feature on Disk tab to Rebuild MBR which may preclude the need to run Repairs x3.
If it will not repair it may have corruption requiring leaving it the way it is (wrong) or reinstall.