Strange that G has no page file or crash dump enabled. It should have a Page file if it is a working OS.
You may have an insurmountable repair job with bitlocker in the way. I would try Repairs from the DVD or System Repair Disk.
When you boot into Repair it should show both installations to Repair so that you can highlight the one you want repaired and run Startup Repair repeatedly.
If it doesn't show G to Repair then it is not even being read and would need marking Active to run Startup Repair - Run 3 Separate Times
to try to move the System boot files to G from SysReserved for the purpose of starting it. You could then add C using EasyBCD to have a jerry-rigged Dual Boot from G. I would back up an image of both OS's and Sys Reserved before trying this, as well as separate full data backup.
Better to copy your data off of G from C and clean reinstall to G if you really need a second Windows 7 on the HD. Remember you need a separate Product Key to legally run both.
Remember also to always boot the installer to correctly install Windows 7 so that it conveniently sees itself as C when booted.