It's just possible your warranty might still be in effect if you brick a book. After humming along quietly for a long time we got hit by lightning and my MBWE died. I attempted many reboots and finally noticed that the LAN port was never flashing during any part of the failing nonboot process. I suspect mybook was fried.
The happy news, I got an RMA from western digital and just unwrapped my replacement (refurb) today. It's humming quietly in the corner now just begging me to do something creative.