Stuck at HTC logo n vibrate 7 times

hey guys.sorry for my bad english...
so,I have this problem! :
When I turn on my phone ( HTC Desire 300),it stucks at HTC logo and vibrates 7 times.
I googled it,but found nothing... :(
I can go to hboot and fastboot,but ... :(
I tried everything with fastboot (flashing recovery,boot ...) but the fastboot gives me a error (image update error).
can anyone help me plz? I really need this phone...

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