I got bought a new Raspberry Pi B as a present that came with an SD card, power and case etc but no instruction manual, and since it is meant to be about "teaching" I thought I'd just plug it all in, power up and see what happens. What could go possibly wrong?
I was presented with a window title NOOB v2. something I think, and a long list of what I figured were operating systems I could install. For some reason the RaspBMC sounded like fun, so I clicked that one, and after confirming I was sure it started installing. After about 4% it suddenly stopped with an error about the file system, and then went to blank screen.
Nothing seemed to respond at this point, so I cut the power and turned it back on again. This time it gave me the rainbow screen, and then a grey screen saying "For recovery mode hold
shift", then the screen goes black.
At first (when the grey screen is up)
100 LEDs are lit. After the screen goes black, only
ACT are lit, and then
ACT goes out.
Holding down shift does nothing.
What have I done, and how can I undo it?