cards and cameras can be finicky. i would try a new card. if it does not work i would try ejecting it and push it back in and repeat it if it does not work. also c if the sensors on fac camera face blink when u turn it on. when you do power it on what does it say on screen? with a moultrie it should read 0000/ 3950. 3950 is an example of how many pictures u can get on it. this will change with different sd cards.