WD TV LIVE HUB just started rebooting/crashing today and won't stop

We have had the hub since Christmas been loving it so far -  Until today when it has started rebooting - constantly!  Like I am sitting here watching it and it has done it like 5 times while I was joining and writing this post!

We have it set up on our network with two WD Books, one in each usb port (movies and tv series). Everything has been working perfectly until today. We were able to connect to it and watch both movies and tv series from nearly every room in the house from either a blu-ray player or xbox 360.  Now that it has started crashing, none of the other devices can see the books that are connected to the hub.  They all see the hub itself but show that there are no videos.

Can someone help me please?  The hub is connected via ethernet as are all the other devices.

Thank you in advance!

If you disconnect it from the network, do the reboots stop?  

If they continue even off the network, try doing a full system restore.

If they continue even after that, I would suspect you have bad hardware.