Hello.
I have Lenovo T460s laptop BT460 NM-A421 i7-6600U with unknown history. When it power ON, green led is lighting around 10 seconds, no picture, no beeps and then laptop turns OFF itself. (power led 3x blinking before turnig off.) With another bios dump (not clean ME) unit turns off around 20 seconds later with the same blinks effect. (like adapter is plugged in.) Seems like not a bios problem. Battery can be charged. What can be wrong in this case?
(спокойно пишитe по русски, читать знаю.)

Надо проверять все ли напряжения поднимаются, на процессоре, памяти, видеочипе.

Сначала прошейте BIOS с чистым ME регионом.

I tried it yesterday with clean ME dump from this site, but no luck.