Default [Q] Help Rooting!

Today, I tried rooting my HTC One M7. But in order to do that I needed to enable the bootloader. This phone is the google play edition. I flashed the unlock code, but I never got the bootload screen (The one with the warning and asking if you want to enable it). Now, when I try to flash the TWRP file, it says error, cannot load file ______: No error. What can I do?