Re: Anyone ever figured out the fix for reboot issue?
If you have removed the .theater folder then you can only try and safe-flash the firmware with a USB-stick formatted to FAT32. If this does not work then you have to use the warranty and bring back the device to your re-seller or to our service center. You have these details on our support page.
You can try to remove the hard drive to see if the player would start up. Just to see where the problem is coming from.
You have the latest official firmware and safe-flash instructions here.