I was working with mini drive, saving as I went along. The computer froze and
I had to reboot. The file vanished from the USB mini drive. I went to my C
drive and found the file in auto recovery but when I opened it most was all
question marks with about 10% of the written text. Can I correct this
recovered file with all the question marks or recover a lost file on a mini
drive - or are they lost forever?