Lenovo Legion 5-15ACH6H (NM-D562 rev:2.0) no pictures after flash bios

pcexpert8

Fans stop spin and i flash bios ,but after no picture any more all power voltage are present..Please help

Serguz05

How can I help you ?

pcexpert8

After flash bios from this site ,doesn't turn picture on screen I save old one, again I flash bios but same result ,I don't understand why this happen ..I measure by oscilloscope on 2 leg of bios no signal :(

Serguz05

pcexpert8 писал(а):

After flash bios from this site ,doesn't turn picture on screen

and before that it was ?

pcexpert8

Before was ok,only fan didn't spin ,I decide flash bios after black screen ..On fan red voltage only 0.200 v..

Serguz05

pcexpert8 писал(а):

Before was ok

why flash it then?

pcexpert8 писал(а):

only fan didn't spin

put another fan in first to check
p.s. fan controlled by multicontroller

pcexpert8 писал(а):

I decide flash bios after black screen

perhaps something has been taken down. maybe you need to flash the multicontroller
and what to say without measurements. there processor ryzen ?

pcexpert8

It Ryzen CPU..I did by vertyanov flash EC .. Before I change fans ,I test fans by power supply spin norma(fans are ok)..Before flash bios laptop was working ,only fans did not spin ,that is reason why idecide flash bios..Better If I was not flash,but now is late:(

pcexpert8

this is my old bios and EC..Wow i flash bios with programmer 1.8v and laptop turn on..But fans not spin:(this bios are working )
I found issue for fans this was damage (AOZ2151EQ)PU7901 i chnage it now fans working Thank you

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Lenovo Legion 5-15ACH6H (NM-D562 rev:2.0) no pictures after flash bios [РЕШЕНО]

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