So some workmen were working at the house switch box which created multiple power failures for the RPI.
Now it is not working.
- At first, it was just dead (red power LED, but nothing else) so I restored my most recent IMG file. It will now start to boot (prints two lines, the second of which says something like "not a IO03166 code", but Google is no help.) It then displays a big Raspberry with a symbol in the center saying "shift".) Then starts to printing console output like it is starting to boot Linux but after printing a bunch of lines it resets and starts booting again. Stuff flashes by so fast I cannot see most of it.
- When that didn't work, I restored my oldest IMG file to the SD. I choose to do this particular IMG file because this IMG file I previously restored and booted when I first got the system to make sure my backup procedure worked. However, it still does the same two-line, Raspberry, console, reboot sequence as with the other image.
- I used SDCardFormatterV5 to completely reformat the SD, then restore an IMG; still reboot cycles.
- I connected keyboard and pressed Shift at the Raspberry . . . it flashes some kind of a software display (maybe GRUB menu?), but then instead of coming to the keyboard, it blinks by that to the console output again and then resets as before.
I am beginning to wonder if there is an actual problem with the RPI itself caused by the repeated power failures.
Other than buying a new RPI . . . my bag of tricks is empty . . . any suggestions?