Hi, I have a Xiaomi NoteBook Pro laptop (r15-6050a2940901-mb-a01), SN BCA8H103CMJ7E0AA0A, which does not start, the 20V usb-c is launched but without charging. Looking at the LE=Richtek chip, it is well supplied with 23V and supplies the micro controller with 3V8. I did not find a short circuit, the mp3426 chip is not powered so I do not have 3V3 on the bios chip. Could my micro controller be defective? Why is the mp3426 not powered? Is it the micro controller with the power button that triggers the power control of this chip?