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k451 (S451LN) not turn on(die after a sec,stuck in G3)

R EZ A

Registered member
hi guys
i have a laptop here that it just working for less than a sec
voltages and signales are true for a sec and after that all voltages die
just 3.3VA&5VA
no sus voltage
no RSMRST#

but its diffrent with battery
when it powered by battery,it respond to power key and turn on 1.05VSUS rail
totally different with ac mode

nothing changed by program bios n ec
is any error happend that it stucked in G3 mode?
 

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