The motherboard or the mainboard is the core of the computer set, each part of the computer relies on the mainboard to work its part correctly. One of the main functions of motherboard is to maintain connection between each computer parts and make sure that components are working well between them.
Lots of signs of motherboard crashes are that the PC won’t boot up. It does not reach the POST test. It shows erratic behavior. Or something else of any combinations of components is not working. Because all parts in computer is associated to the motherboard a particular parts may or may not work properly if the motherboard is damaged