At this point there's a very good chance that we won't be able to get the repair to run. I don't want to waste any more of your time than I already have so I would like to give you options and let you decide.
1. Do a fresh install. You would need to make sure you have your QuickBooks and Office software/keys and I can assist with this. We would then download the drivers to a USB key, do a fresh install, re-install your programs and copy your data back. This is assuming you already backed up your critical data to external media.
2. I still have several other things we can try. We can start with an attempt at a repair install again. Then It will involve rebooting into the WinPE environment like we did before and running some fixes to copy some folders/files. Then we will try to run SFC and see where it takes us.
3. Even though your machine wasn't tested we can try to do an Upgrade to Windows 10. If it runs, it may work.
I'll do whatever you wish.