Arduino help

I want to run 2 stepper motors with arduino uno.motor wants 12 volt supply. i tried to run with arduino stepper motor driver wont run. then with ULN2003 it was running now it is not running with it in proper steps. i tried L298 also but same problem is occuring.so plz help me as soon as possible

Sketch your circuit, and post it here. I suspect you haven't wired the power supplys properly.