Ok, so try this:
Go into the bootloader. Then select recovery. If recovery is not available, it probably says fastboot or fastboot USB. Push power and it changes to HBOOT and Recovery is available. Enter recovery.
If you have the Stock Recovery, you'll see an Android with a triangle and an exclamation point. Push power to show the options. Select with vol up and down, and I think the camera button is the select key. Maybe Power is the select button. But there will be a restore to factory defaults.
If you have CWM or TWRP (which are custom recoveries), then you can just do a wipe data or factory reset. They do the same things, just have different names.
If that doesn't work, and you do have a custom recovery installed, you can try installing the stock ROM. Sometimes the SU patch causes issues and it wouldn't be bad to reflash everything to make sure everything is good to go. Instructions/downloads for that are in my guide:
http://androidforums.com/evo-3d-all...ms-kernels-using-fastboot-updated-3-26-a.html