The System Active boot files are contained on C so it's strange they would separate out WinRe - which normally resides in the Windows folder - onto a non-bootable partition. WinRE appears to be a Factory Recovery partition.
Could there have been any partitioning adjustments or repairs run on the computer? How confident are you this is the state it came from factory?
In addition to removing the drive letter from WinRe I'd mark the other HD Inactive as only the OS System drive should be marked Active: Partition - Mark as Inactive - Windows 7 Forums
. If this drive has been previously a bootable System drive then I'd wipe it to clean the boot sector so it cannot interfere using Diskpart Clean Command
since it appears to be empty.
Under the circumstances you should test WinRe to see if it works:
First make your System Repair Disc - Create.
Next reboot the computer and tap the F8 key repeatedly to enter Advanced Boot Options
to see if the Repair console is on the menu. If so boot into it to see if it finds an installation to repair, if it has any issues it wants resolved up front. If not click through to System Recovery Options
to run Startup Repair to see if it finds anything which needs fixing.
Once you know WinRe works correctly, see if Factory Recovery will cue up to run. If you tell us the make/model of your computer we can link the steps for this, or you can consult your manual. See that it cues up correctly and what options it offers. If not it may be that the partition is no longer bootable because of changes made to the partitioning. However this does not mean it will not run if it is marked Active when needed then rebooted into it.
Make your Recovery Disks now if you haven't already so you maintain another option of running Factory Recovery. You can also always clean reinstall if needed using a Windows 7 installer for your version with the Product Key on the COA sticker. Reinstalling Windows 7
Or you can fall back to System Restore
points or a Windows 7 backup image you save externally in place of reinstall if Windows 7 becomes irreparable: Backup Complete Computer - Create an Image Backup
Make the disks, run these tests, feel free to ask back any questions and/or report what you find.