Raspberry Pi Won't Boot

Question

I have tried multiple operating systems...

Raspbian
Debian
OpenElec
Raspbmc

Two different SD cards...

Sandisk 2gb BE1210021871G
Sandisk 4gb

And two different Raspberry Pis. I cannot get any combination to boot. I followed the OSX install guide and have also tried to install from my Linux box as well.

When installing/booting I get a load of USB errors like...

raspbmc unable to enumerate usb device on port 1 (even when there are no USB ports connected)

Then after the first boot when I try turn it on again it just hangs on a black screen. Any ideas?

What is its maximum output current? What peripherals have you got plugged in? — Alex Chamberlain, Aug 11 '12 at 11:18
If the power supply is the only thing in common, it makes sense to suspect it. — John La Rooy, Aug 11 '12 at 11:22
What were the exact commands you used to flash your SD card? — Alex Chamberlain, Aug 11 '12 at 11:37
The ever-present USB device is the hub/ethernet chip, unless you have somehow obtained a model A without. — Chris Stratton, Aug 11 '12 at 12:30
If you can hook up to the serial port, you can get a copy of the boot messages to add to your question. http://raspberrypi.stackexchange.com/a/1231/590 — John La Rooy, Aug 11 '12 at 20:45

score 5 · Answer 1 · answered Oct 11 '12 at 09:24

As others have mention, suspect your power supply.

From the Raspberry Pi Blog "Counterfeit power supply units in the UK":

Everybody testing returned units used in the UK has noted a problem out there with some power supplies, all of which appear to be counterfeit Apple chargers. We’ve all compared notes, and we’re all seeing the same thing: some of you are using chargers you’ve bought in good faith which are not the real thing, and which don’t behave like a safety-tested, properly engineered piece of hardware

Raspberry Pi Won't Boot

1 Answers1