HTC m7 resets on htc logo and bootloader doesn't respond when selecting any option

[Android Central Question]

Hi,
i have an international ver of htc m7
it had stock htc ver with all relevant updates and not rooted
a few days ago it restarted and didn't get past the htc logo screen

when trying to recover via the bootloader nothing responds
what i mean is rebooting to the bootloader and selecting recover or any other option

Info on bootloader screen:
LOCKED
M7_u PVT SHIP S-ON RH
HBOOT-1.61.0000
RADIO-4T.35.3210.16
OpenDSP-v35.120.274.0718
OS-7.21.707.151
eMMC-boot 2048MB
Nov 19 2015, 16:46:30.0

any assistance would be great and helpful links

 

[Rukbat]

That sounds like the ROM is corrupted. You'll have to reflash it. This video

has a lot of false starts, but if you can sit through it (it's 10 minutes long), that's how to reflash an HTC. (You'll probably have to do a Google search for the ruu file for your particular model.)