Kindle stuck on Kindle logo then disappears then appears... topic

I have rooted my kindle then I installed TWRP recovery, I wanted to test the recovery mode it worked fine then I wanted to reboot my kindle and it stuck on kindle fire logo it disappears and then turns off like a old tv(with this line in the middle) and turns on the same repeats ...

I can't get into recovery mode but I think it needs first to turn off to do that.
I am a noob please if it's possible explain it by steps.

I am thankful for every help