[Q] Kindle fire doesn't power on

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I have used the latest Kindle Fire Utility to root my Kindle Fire on 6.3 software. Everything was fine, i have installed the permanent root with success and installed the Google Applications.
The problem come when i did install the the latest TWRP. Everything was fine, and it have been successfully installed (as it said on Kindle Fire Utility) and when i pressed the reboot button on the Kindle screen, the screen become black and nothing happen. Now i can't power on my kindle, i'm stuck on the black screen.

Any solution to recover from this brick?

Thanks

Edit: I've manege to fix this holding the power button for more than 15 seconds. The admins could remove this post now.

thnx God u did this same happened to me

Sent From my Kindle Fire
Setupetails are Below
Cm7 Barebones+Raven's Kernel
Minimum:300 Higher 1200mhz
Go launcher Ex With MIUI Theme
Games:MC3,Fifa 2012,Real Racing 2,Stick Cricket,Gangster Rio....
Apps:Mx Video Player,JetVid,Titanium Backup,Opera Mobile,Dolphin HD,Adobe Reader