it's all to do with the aligning of the Chip.
Look on the dms3 website for pictures of where the 'g-spot' is on your motherboard. Using a fine knife lightly scratch it and you will notice it shine.
When it gets to this stage try aligning the chip again.
It's all trial and error. Can be tricky.
If you're having serious problems then post the gear to me along with a fiver and i'l do it for ya