Weird stepper issues

Hi,
I recently bought my first 3D-printer but can't get it to run I'm using pronterface to controll the printer and when I move one of the axes 0.1 it seems to work, but the length the axis move is inconsistant. When i try to move it further (10 or 100) the motor makes a wierd noise and won't move at all. I'm very new to 3D-printing and would love if someone could help me. Thanks in advance

Try adjusting the motor current (usually a tiny pot on the motor driver board) and/or reduce the speed and/or acceleration settings in the firmware.

I have tried adjusting the motor current with little luck. Where in the firmware can I reduce the speed/acc?

If your machine runs Marlin firmware on an Arduino, the variables are in the config.h file or configadv.h (I don't have it in front of me and forget which it is). If you're using a board that runs smoothieware all the variables are all in the config.txt file on the uSD card.

Yes I am running Marlin, but where in the configuration.h are the speed settings? Am I supposed to adjust the #define XY_Travel_Speed? (it is currently at 8000 mm/min)

see here: [blog.lincomatic.com]