Geeetech

Hello, I recently finished the assembly of the prusa i3 pro W, but while doing the first print I faced the following problems: https://www.dropbox.com/sh/0dwvcim5j1ncr4r/AAAgFtDZ4qdXeYq3oMZ9pcfaa?dl=0 The z axis is having trouble moving up and down, it gets stuck and makes a lot of noise. I tried ta...