I have the same exact problem wit TWRP and wiped my phone. The phone does not boot and my Windows 7 PC does not recognize the phone using PDANet drivers. If I can get the PC to recognize the phone I will be able to copy a ROM and use TWRP to re flash it. What should I do about the USB drivers on the PC? Please share any USB driver links that can help resolve this problem.I admit that I caused this mishap. Installed TWRP on my Droid DNA, and inadvertently wiped everything. Bootloader and TWRP works, but it doesn't boot. My Mac and Windows 7 PC don't recognize the phone when I put it on fastboot. Is this bricked?