Anyways, a few hours ago I tried to do a factory reset in recovery mode and I got to the page in TWRP where I could wip dalvik and cache but I selected the "system" option as well (it's a long story how I managed to accidentally tap that) and now when I reboot from recovery, it says "No OS installed." So now when I power off my Nexus and power it back on, the screen lights up and "GOOGLE" appears, the part right before the nexus logo appears during power up, but my phone stays at the Google logo and doesn't move. When I connect my device to my comp, my phone isn't recognized and so I can't add the factory rom onto my phone and I've tried to follow several procedures that I found on xda and other sites. Anyone know what I can do? Again, sorry if this is in the wrong forum or if it's been asked many times before or anything but I really need help since I don't think google will RMA my phone since it's bootloader is unlocked and rooted.