Default [Q] Kindle Fire HD 7 after gapps stuck on blue logo

hi, my kindle fire hd 7 1st gen got stuck in blue logo. Thats all what i did:

1) Rooted it
2) Installed 2nd bootloader & TWRP

All was going fine, then i decided to install gapps so i downloaded the zip file, logged into recovery, selected the zip file and installed it.
After reboot, it shows the orange logo for 2 sec and then stuck on blue logo. If i try to hold volume up and power all i get its a black screen.

What should i do?

Thanls