Answer of your leaving message
I have tried to factory reset my cameras but they are not responding. The blue light is solid, there is no green light. Holding down the factory reset button for 5 seconds does not work

by Harpinder Sanghera

Dear Harpinder, thank you for contacting.
For Isensor, if AC and USB cable is good, camera does not response to the hardware reset and function. The camera is defective due to failed internal component.
A cross border and chargeable repair service is for your further justified. Thank you