problem is the recovery, it's outdated and won't work 4.4 ROMs
Assuming your phone is an M7_U/UL version (ie
not Sprint, Verizon, Dual-SIM)
get TWRP from:
2.6.3.3:
http://techerrata.com/browse/twrp2/m7
or 2.6.3.4:
http://techerrata.com/browse/twrp2/m7ul
(make sure MD5 is correct, that site does not play nice with download managers)
2.7.0.4b:
http://xdaforums.com/showthread.php?t=2708134
in bootloader/FASTBOOT USB:
fastboot flash recovery openrecovery-twrp-2.6.3.3-m7.img
fastboot erase cache
fastboot reboot-bootloader
And when you get a chance, please take some time to do a little research.... "all i know is its an M7", is not a very encouraging statement when you want to flash things.
PS: once you're in bootloader screen one of the top lines should say M7_U or M7_UL etc. ... if it's not one of those, then do not flash the above mentioned recoveries