You wont be able to fix all 2815 missing files from an offline repair, this MIGHT work if the image was the exact replica of your HDD, but all these missing files are from 100's of different versions/updates. Is install.wim from the original Windows 7 RTM disc? If yes, you will only be able to repair 1 out of 2815 files with this method, I looked in the log again, only one file is from the original RTM image.
BTW: How to restore [backslash] everytime I press [backslash] I get \ key?
Are you saying that when you press backslash another key comes up?