device is stock in HTC wont boot up and it wont get in HTC screen to install ruu topic

hi guys
i have an htc droid dna from a client
is stock oem
he did a hard reset
but it wont pass the htc logo screen
turns on and off thats it
now should be very easy to install oem rom by ruu
but ruu sends the command to go to HTC install screen
but it goes dark and it wont install
i did many installs using the img zip on devices with microsd card
but on this one i dont know how can you guys tell me how to do it???

thanks