Why isn't the needle moving on my sewing machine?

SOURCE: needle jam

stuck the whole machine the needle did not move .needle and wheel handle both are stuck

SOURCE: Brother CS-8150 Won't Work in Reverse

Look at the feed dogs under the foot see if they are raised high enough to pull the material through.

SOURCE: sewing machine 'popped', and needle is hitting

Adjust the metal plate to fix the needle hitting problem.

SOURCE: My sewing machine makes whirring noises but will

Not sure about this model but most have a belt inside the machine to connect the motor to the rest of the machine. Some have an access plate you can remove. New belts are available many places and are usually easily replaced. Good luck

SOURCE: My Handwheel on Brother LX

sounds like you have the bobbin clutch disengaged. Check to make sure you have flipped it back to sewing mode.