How do you put a garage door back on its track?

To put a garage door back on its track after rollers have popped out and door is crooked or jammed, you need to do so safely, and professional help is recommended if springs or cables are broken, as door is heavy and under tension. First, stop using opener and pull emergency release cord to disconnect trolley, and fully close door if possible, or clamp door with locking pliers on tracks below rollers to prevent it from falling, as door can weigh 150 to 300 pounds. Inspect why door came off track: check if tracks bent from car impact, if cables broken or off drums, if springs broken, or if rollers worn. If springs broken or cables off drums, do not attempt to put door back on track yourself, as high tension dangerous, call professional costing 150 to 350 dollars for off-track repair. If tracks only slightly bent and springs intact, you may attempt DIY: loosen bolts securing vertical track to wall, gently tap track back into plumb with rubber mallet, and pry open track with pliers just enough to guide rollers back into track, starting with bottom rollers first. Lift door slowly with helper, guiding rollers into track, keeping door level to avoid binding. Tighten track bolts securely once rollers seated. Test manual operation before reconnecting opener. If rollers damaged, replace rollers costing 10 to 30 dollars. Lubricate tracks and rollers with silicone. If door still binds, call professional.