I have several hikvision cameras at home but 2 of them don’t record anymore, I’m able to view live but when I go to recording it shows empty. I reset the cameras I bought new sd cards, I reformat them, I checked the settings of this 2 cameras and compared with my other 8 ones and everything is selected and checked the same way. Is that possible that because they have 5 years of continuous use that they went bad?