Well... I have unlocked the bootloader, installed twrp wiped all the data, downloaded Nexus Root Toolkit to make my life easier, and did the flash stock to 4.4.4 BUT it still will not get out of boot loop...... so after try to reinstall twrp in fastboot I wipe the cache, it now will get past the boot logo and on to the updating apps... screen, and hangs there! after a reboot it then hangs at the boot animation.
so i tried to wipe with twrp and just manually flash the stock rom using the fastboot commands... this gives the same results.
frustrated but not giving up I tried installing stock 4.2.2... and of course it boots.... but now all attempts to update from 4.2.2 to 4.3 or 4.4.2-4.4.4 with a full on flash from twrp does not work and just goes back into the boot loop.....
I even tried sideloading some custom roms! PLEASE HELP THIS MAKES NO SENSE TO ME!!!