Trigger a Sad Mac

pressing the interrupt switch on Mac computers that had one installed, or by pressing Command and Power keys shortly after the startup chime.

Command or Programmer key+ Power

Sad Macs typically are like the Kernel Panics of Mac OS X.

https://udcf.gla.ac.uk/~gwm1h/Error_Codes/Sad_Mac_Codes.html

has a good overview of their causes.

I'm sorry, I don't understand your question. Could you be a bit more specific?