Revision C4 - No boot message and USR0, USR1, and PMU not lighting up

Thanks for the answers, I will format my card using the official
procedure and get back to you guys on how it went.

Regardless, the BeagleBoard is able to boot out-of-the-box, right? If
so, then my problem may not even be the SD card - could it be my power
supply? I see my power supply is DC 5V 1000mA, though, which seems
right.

Hi Eric,

I have some experience that contradicts this. I had a working SD card
with MLO, u-boot and uImage on it. In the course testing some
alternate kernels I renamed my uImage file to something that wasn't
simple 8.3 but required use of the long filename extensions. After
this my BB would no longer boot from that SD card. Reformatting the
boot partition and re-installing the same MLO, u-boot and uImage with
simple 8.3 names fixed it.

Just to be clear, there was a valid kernel named 'uImage' on the boot
partition - it was the presence of other non 8.3 files on the
partition that prevented xloader from accessing the filesystem.

OK - I will keep this in mind while trying to track down the full truth once
and for all :slight_smile:
  Søren

I decided to test if the power supply was the source of the problem
and plugged in my USB to barrel connector into my computer and
connected it to the board and everything works! Turns out it wasn't
receiving enough power from my 5V plug.

Thanks for all the help, everyone.