Basically I have a Kindle Fire HD 7" Tate that shuts itself down after loading either the normal Kindle Fire boot logo OR when entering Fastboot. It stays on in Fastboot for about 3 seconds and then switches off and continues to loop while the factory cable is plugged in.
If I have the normal cable plugged in, boots to Kindle Fire screen (no animation) and then shuts down. Power button unresponsive.
Any ideas? I have managed to load the bootloader, recovery and boot stock via fastboot in time before it shuts down again but this has not helped.