Is there any way to reset it back to the Factory standards.
Not particularly... there aren't any endstops, so you would have to break out the multimeter and measure across the chip, then adjust, then measure, then adjust, potentially to only find out you fried it already. I would just order a new one if you are absolutely certain your steppers are not being powered properly. http://www.pololu.com/catalog/product/2128http://www.pololu.com/catalog/product/2128
Before you do that , check all of your pulleys, particularly the ones attached to the stepper shafts, are secure. They can be quite deceptive in that the motor will very quietly turn inside those pulleys, making it seem as though the motor is not turning, when in actuality it's just fine, the pulley connection is the issue.
Did you adjust the stepper power while the motor power was on? This can destroy up the stepper drivers. (Quite easy actually, I found out yesterday)
There is some info about tuning the steppers here:
http://wiki.ultimaker.com/Electronics_b ... or_drivers
At the Ultimaker HQ, the steppers are tuned to give out 1.2A I think. But we use a special setup to measure that.
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