Following are a few possible reasons why this may be occurring:
1. Please power off the camera before inserting the SD card into the camera.
2. The SD card write speed is not good; please use an SD card with class 10 or above class 10.
3. The SD card is broken.
4. The SD card has not been formatted properly. please format sd www.sricam.com/srihome/download
5. The SD card slot is malfunctioning.