[Q] Root failed and now stuck in boot loop - 7" Kindle Fire HD Q&A, Help & Troubleshooting

I tried to root my Kindle Fire HD 7 and apparently it failed. Now the device is bricked and stuck in a boot loop. I get the normal start up screen and then it goes to a blank screen. Then it sits there for a second or two then starts all over. I can't get it in fastboot with a factory cable. No software I have tried works. They all say they cannot find the device. Any help would be appreciated. I am sure there is a thread here that covers this and if so please direct me that way. Thanks.

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[Q] Big Issue with Kindle Fire

So, I'm running software 6.3.1(stock), and I wanted to root. So, i followed a tutorial that said I should install TWRP recovery after I root. But, dummy me, tried to install TWRP recovery on a stock kindle fire. After a couple of minutes of installing, a console message appeared that said that the program told the kindle to boot in fastboot mode. Well, after 10 minutes, the Kindle was still not booted, so I disconnected it from my PC. And now, when I try to turn the Kindle back on, it just stops at the splash screen. I'm thinking that it's bricked, so can anyone help me get this fixed?

Kindle Fire HD 7" Stuck after Amazon Logo (Question)

Hey guys!
So I have ran into an issue, I just got a brand new Amazon Kindle Fire HD 7", it has the 1.5 GHZ processor.. ect. Anyways, so I wanted to install some system updates and I didn't want to allow it to do that because I was afraid I would loose my ability to root, so I shutoff the device. Well like an idiot, it booted back up and displayed the message again, saying it was updating, I did it a second time, powered the device down, and now I am stuck after the Amazon boot logo, basically I just get a lit black screen. However I can access the adb interface, only issue is that the device is unauthorized.. (Something else I didn't think of). I tried to enter fastboot but it just says waiting for device.
So is my only option left is to get a Fastboot cable? What mode is the device stuck in? It's not bricked right since there wasn't any custom anything installed, just an interrupted system update. Should I attempt to get a replacement from Amazon?
Thanks a ton,
Matt
If you get a fastboot cable, you can forcefully restore the O.S....but you're covered under warranty so you can return it

Fire HD 7 tate. Tried to reflash stock but still not booting

I have a Kindle Fire HD 7.
Shows as Tate-PVT-08, it won't turn on just shows logo then goes blank. Checked battery and has 4.6V
Had it on charge all night so should be ok.
I tried the steps in this link.? - http://forum.xda-developers.com/showthread.php?t=1951254
I've tried the SRT_1.3.5, 1.3.0. and 1.2 and still the same when rebooted.
At one point after trying the 1.3.0 I rebooted and it tried to start 3 to 4 times with the animated logo, which is more than I've been getting, then it went into system recovery with the red exclamation, so I tried a reset to factory defaults but it just went back to not starting with the logo coming on for a few seconds then disappearing.
I would appreciate some help if anyone knows how to fix it. I don't how many times I've tried.
Since nobody can help (or won't help), I tried the Kindle Fire First Aide program and now at least I get the Kindle Fire System Recovery screen with the red triangle and exclamation mark, and Reboot or Reset. I tried the reset and it just loops back to the Recovery screen.
Can anyone help me on this please?
I have to see it up close to understand the situation. Would you be willing to mail it to me for further diagnose the device?

Help: Kindle Fire has a bootloop !!!!

Hello and good morning.
I am writing here, because I have a big problem. My Kindle Fire HD (first Generation) does not start any more. After an update (Cyanogenmod tate) I only get the yellow Kindle fire logo. And after few seconds the Kindle starts again. Then - after about five minutes - everything is dead. But if I do a reset I get the same situation. Unfortunately I get no connection to my device via the computer (tried Windows 7 64 bit and Ubuntu). With adb devices I cannot detect my Kindle. Is there a possibility to get into fastboot to install CWR etc.?
Help me, please
Herbert
So to clarify, the first time the logo comes up it freezes and then resets itself, followed after about 5 minutes the kindle just shuts itself off?? Also, you ask about getting into fastboot to install CWM. Do you not have a recovery installed? Such as CWM or TWRP?
I installed TWRP version 2.6
But I also cannot boot into the recovery (Power on & Vol +). Then nothing happens. I actually have ordered a fastboot-cable. Maybe I have success with this cable. Otherwise it is finished for me.
Yea try booting into recovery and flashing the system images to get back to stock. That's all i can think of since i'm not entirely sure what happened, either you got a bad download or your kindle just flipped out and essentially bricked itself.

Kindle Fire HD 7 (2012) - Fastboot Loop an Black Screen

Let me explain the process to get this state:
Installed CM13.1 and flashed SUPERSU, despite the post says not to, after that stars a bootloop, the kindle only showd the first logo the orange one.
After that I flashed the original bootloader from 7.2.3 and that killed my Kindle totally.
I manage to apply this tutorial: https://forum.xda-developers.com/showpost.php?p=63860565&postcount=39 and revive my kindle.
After all the process starts on the Amazon Logo, orange, and jumps to fastboot moden and after 3 or 4 seconds it's restarts and windows can't detect the dvice, I tried to upload again all the software using KFHD_SRTool and even it uploads the same situation presents everytime.
Hopes someone can help me, I think the problem resides in the SUPERSU scripts that I upload, thanks in advance.
Leaves a video with the malfunction.
https://goo.gl/photos/AMD9AaacyoQRpQBS8

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