Lens does not open opens part way and stops
Run the lens out as far as it will go. Look at the gap between the lens base and the camera housing. See if the gap is even all the way around. If it is closer on one side than the other, gently press lens cylinder toward the widest point. If you hear a tiny snap that means the guides have reseated. If that does not work, make sure you have a fully charged battery in the camera, plug the audio/video cable into the camera to disable the display, lay the camera back side down on a smooth firm stable surface, press down the shutter button and hold it down, then power up the camera. If that frees the lens, pick up the camera and point it downward. Using the zoom in and zoom out button, run the lens in and out several times to see if you can dislodge any grit between the lens cylinder and the camera housing.
If these steps do not work and the camera is destined for the trash can, try a couple of other steps. These may damage your camera or fix it.
1. Remove the battery. Grasp the camera by the top and bottom edge. Holding the camera over a couch, bed , or other soft surface, slap the camera front into your cupped other hand, two or three times. Replace the battery and see if it works. If it does, agasin hold the camera face down and run the lens in and out several times using the zoom button.
2. The very last resort is to try to pry the lens out with a slender tool. There is a great possibility you may damage your camera even further, but if you are going to trash it anyway it is worth the risk.If you are able to free the lens using a gentle prying force, again point it toward the floor and rund the lens in and out using the zoom button to try to free any grit or dirt binding the lens.