I have tried to install a the kernel and now after i had done a reboot it won't even start up now and the screen shows only different colours

I have tried averything and they still won't turn work. So what is the best next option to do?

Here is a picture of the modules how they are connected

I am currently working on creating a tool issuance system. This consists of 20 lockers whose doors are controlled by solenoids. The solenoids are controlled using 3 DO modules and 1 RevPi CONNECT SE. This system is fed with a voltage of 24V and 10 A. But as soon as I start up the system, only the Re...