I'm ready to continue forward. I just need to know if I should type "cd \" at the "C:\Users" command line, followed by the four earlier commands (bootrec, etc.). I neglected to mention in my previous message that I did try typing in the other drive letters too (D:, E:, F:, etc) but I didn't see anything there that was applicable.
Somehow I missed the video you posted in post #34. I think my mind is conditioned to skip over anything that isn't text for some strange reason... lol. Anyway, thanks for that video. I watched it and followed the instructions but got hung up here:
x:\Sources>Bootrec /fixmbr
The operation has completed successfully.
x:\Sources>Bootrec /fixboot
The operation has completed successfully.
x:\Sources>bcdedit /export c:\bcdbackup
The store export operation has failed. The requested system device cannot be found.
I tried using different drive letters (d, e, f and g). I tried different BIOS boot settings, to no avail.
Here's some additional info if you're still around, or if someone else wants to help out. Someone advised me to use the diskpart command to diagnose the problem, but I don't know how to interpret the info shown: