Dragon Board 410c - Not Booting -


I was working on Dragon Board 410c with Linaro Linux, but today when i was disconnecting an SD memory trough an USB adapter (without executed any mount or umount command) the board entered on a break stage. Energizing the board comes with BT and WIFI strongly lighting and no more activity, nothing on a HDMI monitor connected to it and no SSH connection.
I just tried to boot with an SD with a recovery image, connecting via SSH and pushing S4 trying to enter in fast boot stage but nothing happens.

Could anyone help me with this issue?

Thanks a lot.