It got stuck with the lens out and it doesn't get back in. No buttons respond.

As soon as the camera is switched on, the lens barrel will come out. Everything should be ready to shoot pictures. If it is not responding to the buttons, you could try to remove the battery for a few moments. It will cause the camera, to start from scratch. Call it a cold boot. But then after switching on, it should respond normal, like you used to work with it. If it stays frozen, visit your dealer or contact a Samsung certified repair centre.

Force it out like it was forced in. Try to rotate the lens. Remember it has to be off. As soon as the lens is half way out, turn the camara on and the lens will go to its position. If not, while the lens is out turn it left or right until it's back to its position.
Good luck.

Your shutter is stuck open. Remove the lens. Set to fireworks mode. May need to be in a dark room. When you press the shutter button tap the camera with an object that won't damage it. I used a rubber coated knife handle. Pull the battery and repeat. Tapping all around the camera. Hopefully it will break free. Then do some continuous shooting to loosen it up.

First try pressing the DISP or DISPLAY button on the back of your camera. If that doesn't help, try taking a picture with the screen black. Is the picture also black? If so, a stuck shutter is another common failure mode for digital cameras. The symptoms of a stuck or "sticky" shutter are very similar to CCD image sensor failure. The camera may take black pictures (for shutter stuck closed), or the pictures may be very bright and overexposed, sometimes with lines, especially when taken outdoors (for shutter stuck open). To confirm a stuck shutter, put the camera in any mode other than "Auto", and turn the flash OFF (you don't want to blind yourself for the next step). Next look down the lens and take a picture. You should see a tiny flicker in the center of the lens as the shutter opens and closes. If no movement is seen, then you likely have a stuck shutter. If so, please see this link for further info and a simple fix that may help.

First try pressing the DISP or DISPLAY button on the back of your camera. If that doesn't help, astuck shutter is another common failure mode for digital cameras. The symptoms of a stuck or "sticky" shutter are very similar to CCD image sensor failure. The camera may take black pictures (for shutter stuck closed), or the pictures may be very bright and overexposed, sometimes with lines, especially when taken outdoors (for shutter stuck open). To confirm a stuck shutter, put the camera in any mode other than "Auto", and turn the flash OFF (you don't want to blind yourself for the next step). Next look down the lens and take a picture. You should see a tiny flicker in the center of the lens as the shutter opens and closes. If no movement is seen, then you likely have a stuck shutter. If so, please see this link for further info and a simple fix that may help.

I will second that. I can't seem to find a solution for the exact same problem. I tried to take a picture but does not respond, If I take the batteries out and put them back in as soon as I turn it on it takes a picture, then doesn't respond again. AHHHHHHH. Ive only had this camera for about 18 months and I'm so disappointed. I had a fujifilm 5600 Which I passed onto my sister we both have never had a problem, it's 5 years old now and still going strong, Now my camera is wiggin out and I need it to work ASAP CAN ANYONE HELP US

its actually probably the display. there is 3 different displays. 1. shows picture with icons 2. shows just the picture and 3. is a solid black screen. just hit the display button to cycle through until your desired display is present

Sounds like you might have accidentally pressed the DISPLAY button on the back of your camera. It turns the screen on and off to save batteries. Turn on your camera, and press this button once again to turn the screen back on.

But if your camera is also taking black pictures,
a stuck shutter is another common failure mode for digital cameras. The symptoms of a stuck or "sticky" shutter are very similar to CCD image sensor failure. The camera may take black pictures (for shutter stuck closed), or the pictures may be very bright and overexposed, especially when taken outdoors (for shutter stuck open).

To confirm a stuck shutter, put the camera in any mode other than "Auto", and turn the flash OFF (you don't want to blind yourself for the next step). Next look down the lens and take a picture. You should see a tiny flicker in the center of the lens as the shutter opens and closes. If no movement is seen, then you likely have a stuck shutter. If so, please see this link for further info and a simple fix that may help.

General system failure- Contact Samsung for repair cost.

Switch off and on again? Take battery out and replace. Thats the only 2 ways of 'restarting a camera that I know of. Does your model have a 'reset' function? You will have to check the manual for that. Or ask Canon support.