problem with mu htc one

[AbdullahAD2]

hello
i have big problem with my htc one there is no " OS " on it
what can i do to recover it
when i turn it on its stop on htc logo
anybody can help me
thanks​

 

[Golfdriver97]

You would probably have to reflash a stock ROM onto the device. As for how, I am not sure. Can it reboot into fastboot?