I tried to flash a ROM a while back, and it messed up my phone. When turning it on and not doing anything else, it gets stuck on the white HTC One screen (with the Beats logo at the bottom). If I hold the power and volume down button, it vibrates, displays the Quietly Brilliant screen, goes black, and does it again and again. There doesn't seem to be a way to turn it off, except to let the battery die.
I tried to run this RUU:
RUU M7 UL JB 50 Cingular US 1.26.502.12 Radio 4A.14.3250.13 10.33.1150.01 Release 318450 Signed 2
and it gives me error 170 (USB connection error). When plugged in to the computer, it shows up as a CD drive, and I can't really find anything relevant in the device manager.
What should I do?