Unable to boot from NAND or MMC

I was running Angstrom on SD card with dual partition. But suddenly
out of the blue, the beagle board cannot boot any more.

When trying to boot from NAND, I get the error message below and the
board stops responding :

Have a read through here: http://elinux.org/BeagleBoardRecovery

Once you’ve got the board back then you’ll probably need to reflash the NAND…