No OS installed, unable to access with ADB topic

So my friend bought and HTC One M7 on Amazon and it was working fine for a few days but it ended up getting stuck on the boot screen. It has TWRP 2.6.0.1 on it but no backup available. I've been working on it for a few days so here are more details.

version: 0.5
version-bootloader: 1.57.0000
version-baseband: 4T.28.3218.04
version-cpld: None
version-microp: None
version-main: 6.07.1540.1
version-misc: PVT SHIP S-OFF
serialno:
imei:
meid: 00000000000000
product: m7_ul
platform: HBOOT-8064
modelid: PN0712000
cidnum: CWS__001
battery-status: good
battery-voltage: 3717mV
partition-layout: Generic
security: off
build-mode: SHIP
boot-mode: FASTBOOT
commitno-bootloader: dirty-6d8a0b9b
hbootpreupdate: 11
gencheckpt: 0

issues i'm having
adb won't recognize it - adb devices - but fastboot and my PC do
I'm not sure if because there is no OS will USB debugging still be disabled?
I'm assuming it is disabled because i can't access it with adb - but ive read you should still be able to push a recovery image regardless.
im unable to fastboot a recovery or boot.img even though they are in the same folder as fastboot.exe and adb.exe
i have the updated HTC Sync Manager and Device Manager sees the phone so i think i have the newest drivers.

my OS says it is 6.07.1540.1 in red and i cant figure out how to even get an OS on there without an OTG stick and it doesnt have a slot for an SD card unless im going crazy.

It says "Tampered" which its said the whole time
and "relocked" after i relocked it with hamsoon's app to try and install the sense 55 RUU and 50 RUU

i cant get it to fastboot anything besides "devices" and rebooting the bootloader.

Any help would be greatly appreciated before I BLOW THIS PHONE UP WITH WILLPOWER ALONE!