Hi ! i got a Lenovo S145-14IWL 81MU that do not POST, just blinking light on power led.
i already tried a lot of bios but nothings works even the DMI Method

My laptop is
Lenovo Ideapad S145-14IWL
81MU
Motherboard FV440/FS441/FS540 NM-C121
Rev 1.0
2018-12-12
S/N: PF1YMEZG
MTM: 81MU00QAPH
Factory ID: JVHFC1
MO: PF9XB9B01087...