camera showing turn off and on again

Parul the most common issue for that is a stuck lens. If your camera upon turning the camera on feels that it can’t be properly extended or retracted it can give you an error like that. Check between the lens and the camera body for any sand, dirt or any damage. Try turning the camera with the lens facing down and shake to dislodge anything stuck and try removing batteries and memory card, wait 5 minutes and reinsert the battery and try again.

Yes, so please try compressed air. Use a vacuum cleaner with a small tip and use it between the lens turret and the camera body. It should remove all dust and sand. Check on here for some possible solutions.