Default help my Motorola ATRIX HD MB886 not work

ModTranslation..post in English please !

hello goodnight
anyone can help me my cell does not start when you turn aparace only motorola logo
Motorola MB886 model HD mocd7
I did a factory recovery and does not start it's the same
between the fastboot menu and shows sig,
device is locket

batery low
fastboot reason sticky hit factory fastboot

el cell es AT T
SALUDOS..