I had to run the AVG remover twice,and 2 reboots, before combofix started working. It downloaded Microsoft Recover Consule and continued through 50 stages, when the screen went blank and the computer rebooted by itself.
Then I didn't see combofix any more, nor any screens telling me it had finished and was preparing the log. I opened 'My Computer' to go to the combofix directory to look for the txt file, but instead found the that combofix shows a tree of my hard drives and my drives were now under the directory combofix, and no txt file was there.
I really don't understand what is happening.