Post [Q] Weird thing happening, phone not working.

Hello. I'm trying to restore my phone to factory settings, as I'm no longer using it and have someone who would like it. However, when I try to flash a rom, it would say 'successful(flashing via TWRP ofc)', and I would clear the cache, and reboot to system. However, when I do this it just gets stuck on the HTC Quietly Brilliantly splashscreen. I updated my TWRP to the latest version(2.7.0.0), however this pretty much removed the folder 'sdcard' and renamed it to 'internal storage' or something similar. Right now, I have it plugged in to the back of my computer, and it is stuck on the splashscreen. As a last resort, I have come to XDA-Developers as you guys are the ones I can trust at the moment. Any help?