Whenever the cord is plugged into the power supply, the PC takes power and it runs normally. But there is something wrong when the cord is plugged into the power supply, it shows on the power button a yellow light reflecting the board light which is yellow. Then I press the power button and it goes to blue. Which is the normal color when powering on the PC. So does anyone have any idea about that yellow light before the PC power button goes on? Waiting for any reply that can help thanks in advance!