The computer does not turn on by the button, every time I solve the problem with crutches, what should I do?

Question

Iron

The problem happens every other time, the computer does not turn on by the button, I cut off all the wires, climb into the system unit, pull out and insert the wire from the mother to the power button, and then everything works. If I turned off the computer for the night, I press the button in the morning, the button lights up and then goes out, I repeat the above operation, and everything works again. Is it really stupid that the wire goes out during the night. And also when it all just started, I cleaned the computer from dust and everything was fine for two weeks.
Mother - Asrock p67 pro 3
Housing Zalman Z9 Plus
Block 700 W Chieftec
Everything else I think is not important.
So I think there may be a solution to the problem, where I do not have to insert and pull out the wire every time.) Thank you for your attention.

Answer 1

на кнопку идет только 2 провода?
Кнопка замыкает провода? (тестером померить)