First check you have micro stepping enabled (most boards this is 3 sets of jumper pun under each stepper module, should have 3 jumpers on it)
If its not that then your trying to move the steppers to fast
lower max feed rate values in firmware so that insane feed rates are cut back to sane values
ie
/**
* Default Max Feed Rate (mm/s)
* Override with M203
* X, Y, Z, E0 [, E1[, E2[, E3[, E4]]]]
*/
#define DEFAULT_MAX_FEEDRATE { 300, 300, 5, 25 }
lower these....
If its not that then your trying to move the steppers to fast
lower max feed rate values in firmware so that insane feed rates are cut back to sane values
ie
/**
* Default Max Feed Rate (mm/s)
* Override with M203
* X, Y, Z, E0 [, E1[, E2[, E3[, E4]]]]
*/
#define DEFAULT_MAX_FEEDRATE { 300, 300, 5, 25 }
lower these....