have problem with power for laptop.
batery dont charge,no lights ,buttons not work
power adapter output 19,5 V Dc
power cable to motherboard-good
19,5 v on motherbord input pins.
Motherboard problems ?
WOW ,no circuit board, remove baterry ,then open laptop (unscrev screws).remove 2,5 v rem batery(clear bios)
and all is ok, charge and work.likely bios problem .