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#11
Move the System flag back to 100mb System Reserved partition to run the Repairs again, if moving Active flag to C isn't going to start it after 3 Repairs rewrite the System boot files to C.
At this point everything possible that can be done is listed in Troubleshooting Windows 7 Failure to Start so I'd work down the list starting at the top now that you've tried the most indicated fixes.
For one thing it's possible you are infected so no repairs might work until disinfected.
If you get to the last steps to copy out your files and Reinstall to C follow the steps closely to get and keep a perfect install, then after its set up save a backup image so you never have to reinstall again.
I would not chance reinstalling to C without formatting to save your files in windows.old as it is too risky with that amount of files depending upon how important they are to you.
Now might be a good time to pick up an external for file and image backups.