I got s7 edge for 4 days now. But everytime i tried to turn my phone off i always get this message "process system isn't responding" and then it will turn off. By the time it turns on the screen keeps on flashing with nothing on it. Then when it's done everything will be fine. Is it because of a software glitch or what? I already reformatted my phone three times already but still nothing seems to change. And also i notice whenever i try to reboot my phone i had this failed to unmount invalid argument whatsoever. Im worried because even it seems fine now i had this feeling that it would bring me a bigger problem in the near future. Please help. Thanks.