Geeetech

I will try that, actually i only try printing via USB for testing, but i willl try from SD Card now.
But i think that the feeder is the Problem because the stearing weels dont moving

Sounds like your hotend has a clogging or something else wrong on it...Or the temperature is not sufficient?What are you using?

Generally speaking,it should have a smooth flow when you push the filament manually?

In addition,you can remove the fan on your extruder to check if you have the ...

I have Problems wirt my Prusar he moves like he is printing but no material is comming out.

when i push the Filament manualy a little pit comes out.