EVMK2H: Board suddenly stopped booting

Part Number:EVMK2H

Hello everyone, 
I had an EMVK2H working properly until this morning all of a sudden it stopped booting up.

The configuration is as follows: We share everything through a ubuntu server with NFS and tftp. We usually access the board though ssh and execute programs offloading computation from Host to DSP's.

When I booted up the first time the board showed me the following message:

Then i rebooted it and it showed me the following message:

Anyone know how can I fix this and why did it happen?

Thanks