The machine suddenly crashes without any alarm

Failure phenomenon: an industrial control machine as the main control, using Spain (the system as the CNC part
Copy key milling machine, when a part is processed and a new processing program is replaced at a time, the machine suddenly crashes without any
Alarm, restart the system after forcibly shutting down, at this time the host cannot start, at the same time the display black screen phenomenon.
Analysis and processing process: check that the monitor is normal, the processing procedure is correct, and the failure to replace the graphics card and memory still exists;
Further analysis and judgment confirmed that it was a problem with sovereignty. After replacing a new motherboard, the host starts normally and the machine tool is normal