I'm an Elan guy. I know this is stale, but for anyone in the future:

Plug into computer using normal USB connection procedure. See if it will connect. If it does then open the root file and delete everything. Then, do the "Configure this HHR" process again in configurator, should be good.

If it doesn't, it's dead. Contact your sales rep, act indignant, and try to negotiate a deal on a new one. They also have some sort of repair process where they reflash the remote. I don't remember why I didn't do that the last time it happened, it may have been prohibitively expensive or it might have taken too long.

Good luck!