3D Printer XYZ Axis Problem
So, I finished building my 3D printer. I installed the firmware, etc. Whenever I try to print in repetier the X and Y axis move really fast while the Z axis doesn't go up nor down. I have tried so much to fix but I just can't find a solution. Also, I have the MK9 Extruder and for some reason the extruder doesn't feed the filament, it just stays there. In case you ask, I have not be able to print anything.
There is a video of the process, and sorry for the mess.