Home alarm system using Proteus, 74HC165, 74HC595 and Arduino uno.

I created a home alrm with 16 inputs as switches and 16 outputs as LEDs. I think i compiled and wired it right but still when i click one of the switches, the corresponding LED doesnt go on. Please help me troubleshoot this problem. It is for my project. I have attched the project files, pictures and code.

// 74HC595 74HC165
// Pin 1 - LED 1 Pin 1 - Load
// Pin 2 - LED 2 Pin 2 - Clock
// Pin 3 - LED 3 Pin 3 - Input 4
// Pin 4 - LED 4 Pin 4 - Input 5
// Pin 5 - LED 5 Pin 5 - Input 6
// Pin 6...

Home alarm system using Proteus, 74HC165, 74HC595 and Arduino uno.