after the last switch off, my notebook doesn't switch on anymore.
Now the PC is opened and dismount.
The power supply supplies 19,4V and this voltage reach the power connector onto the mainboard. The power switch works correctly because if I'm measuring with a digital multimeter, the continuity of the power switch when I'm pressing it, I'm check it, but the related blue led doesn't switch on.
I have replaced the BIOS backup battery, also, but none change. There is none signals from the mainboard. No leds are switched on, except the charge indicator of the main battery.
Could Anyone suggest other misuration or proof to establish if the mainboard is damaged or not?