Hi my Canon Powershot SD 750 LCD screen stays black when taking pictures, you can't view them either. The only thing that shows up on the screen is the menu functions, you can look through everything just not the pictures. What can i do to fix the problem?

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.