The cable is shown not connected and the device is illuminated with a single fixed LED. I think this is a problem with the firmware Because it is connected when entering Etherboot mode
The netinstall program has been used to solve the problem
Windows 7 operating system was used
Also, use only one network card
The firewall has been stopped

When all the led is turned off, it appears inside netinstall, then choose the OS, then press install
When I press install, this screen appears and after about two seconds the LED lights up in the device and then nothing happens.

What model Mikrotik router are you trying to netinstall to?
Have you double checked you have the correct firmware for the model router you are trying to install on?