Support Kindle Fire stuck on "kindle fire" screen, nothing helps

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http://androidforums.com – I was using "Kindle Fire Utility v0.9.9" with option "3" (install latest TWRP Recovery). I was following a tutorial, but it might have been for a different fireware and version of the utility. After this it got stuck on the "kindle fire" screen, now nothing recognizes it. Not windows, not my computer, not "Kindle Fire Utility v0.9.9", not "Kindle Unbrick UtilityV1.1". Windows says: "USB device not recognized". It's a 1st gen. It was running 6.3.2 firmware. I tried holding the power off button for 20-30 seconds and rebooting my (General)