My M7 currently will not boot, keeps saying "process system isn't responding". I can access bootloader and stock recovery. It has a LOCKED bootloader. All im wanting is to either flash stock or find a way to unlock the bootloader to flash something that works! I've been attempting to unlock it, have tried multiple drivers. My pc keeps saying the phone "isnt working properly" when i go to the fastboot screen. It shows a yellow traingle next to it in device manager. Oddly i can access the storage of the device when it's attempting to boot up at the htc logo screen. I managed to get the stock rom zip on the device. But the recovery wont flash it, it also says sd read failed in the recovery.
I hope I can get some constructive help on this. I've flashed many phones before usually with external sd. Please let me know any ideas you have. I'm somewhat at a loss.
Also, i received the phone this way, i'm not sure what has or hasn't been done to it.