HTC one M7 *** LOCKED *** screen

[DanWald1]

the following screen appeared yesterday while I was charging my HTC one M7

*** LOCKED ***
M7_UL PVT SHIP S-ON RH
HBOOT-1.61. 0000
RADIO-4T.35.3218.16
OpenDSP-v35.120.274.0718
OS-7.21.707.51
eMMC-boot 2048MB
Nov 19 2015, 16:06:04.0

HBOOT

<vol up> to previous item
<vol down> to next item
<Power> to select item

FASTBOOT
RECOVERY
FACTORY RESET
SIMLOCK
CHECK SMARTSD

I have read throgh tghe forum and tried several things so far:
1, restarted the phone with SIM in
2, took the SIM out and restarted the phone
3 selected all but the factory reset option of the above and restarted (however it seems the power button doesnt work properly)

result of all still getting the white LOCKED screen

Anyone got ideas or can help?