lenovo nm-c171 S145-14AST S145-15AST

[ayoub.bouchenni3]

Re: need bios NM - C171 REV 1

this is working. problem ok.

working good thnx

[borma]

Re: lenovo nm-c171 S145-14AST S145-15AST

Thankyou

[interpc]

Re: need bios NM - C171 REV 1

this is working. problem ok.

thanks

[fichamba]

Re: need bios NM - C171 REV 1

this is working. problem ok.

Perfect also for me. Thanks a lot!.

[Fenixkoa]

Re: Lenovo s145-14ast Change SN and factory info

Try..

This is a bios for another Ideapad 320-15AST model

Sorry it's my fault, I didn't provide my model.
mine is the Ideapad s145-15AST
bois version: AYCN28WW

[hoaca388]

Re: Lenovo s145-14ast Change SN and factory info

This is a bios for another Ideapad 320-15AST model

Sorry it's my fault, I didn't provide my model.
mine is the Ideapad s145-15AST
bois version: AYCN28WW

S145-15AST Laptop (ideapad)

[Fenixkoa]

Re: Lenovo s145-14ast Change SN and factory info

S145-15AST Laptop (ideapad)

Everything works correctly.
Thanks for your help guys

[claudio21s]

Re: need bios NM - C171 REV 1

Lenovo NM - C171 REV 1
on then off..

thanks

[O.Szilard]

Re: need bios NM - C171 REV 1

this is working. problem ok.

Thanks, it works for me too!

[mANgLEr]

Re: lenovo nm-c171 S145-14AST S145-15AST

Apologies if I shouldn't post this here, I am a new member and cannot start a thread yet. I'm trying to fix a possibly corrupted BIOS but do not know the exact model I have here.

The Lenovo IdeaPad has no useful labels on it apart from 'AMD A4', so I'm going on motherboard silkscreen alone:

FS44A&FS54A NM-C171
Rev:1.0
2019-01-02

The BIOS chip is a 8MB W25Q64FW 1.8v SOIC8 that reads okay in a T566 programmer, so I have the BIOS extracted. I downloaded 'aycn28ww.exe' from the S145-15AST Lenovo support page and have copied two ranges of bytes from original to new that I believe to be the DMI, 2A3000h-2A321Fh and 2A4000h-2A423Fh. No idea if I need both, I searched for ASCII 'LENV' and found two matches, the data between each range is just FF.

I have attached the extracted BIOS in case it is important. Please can someone advise if I am doing this correctly? If not, can a patched BIOS be provided?

Thanks.

[lapfix]

Re: lenovo nm-c171 S145-14AST S145-15AST

Yes you do right
the data between the 2 " lenv" is crypted and yes try your new build bios

[mANgLEr]

Re: lenovo nm-c171 S145-14AST S145-15AST

Unfortunately, the laptop is still not working. As before the power light comes on solid. This time, however, after about 30 seconds the heatsink fan starts and it didn't do that before re-flashing the BIOS. I will try to find an unused HDMI cable in my piles of cables so I can try the external output.

A thermal camera does not highlight anything that looks wrong either. I've probed all over the board and cannot find anything that seems wrong, but I don't yet have the schematics. Will go and request that now.

[jimore]

Re: lenovo nm-c171 S145-14AST S145-15AST

please help me
led blinking

[Macias]

Re: need bios NM - C171 REV 1

this is working. Problem ok.

it worked very well thanks

[SAHILSHAIK]

LENOVO IDEAPAD S145-15AST FS44A FS54A NM-C171 REV 1.0
TESTED BIOS

[foneRoc]

Lenovo IdeaPad s145-15ast
S/N PF1SBXFF
Board # FS44A&FS542A NM-C171 REV 1.0
AMD A6

Hello to all. The system boots up to Black Screen even on external Monitor...

Charging and power Leds are present. Fan kicks in once cpu come to tempreture..

I use EZP2023 To read bios chip then save two copies each being the exact size of 8,192kb. I am not sure if this size is the correct data that should be on said chip as I am DIY newbie when it comes to the Bios..

Thanks in advance for any Help!!

[shiyab]

Lenovo IdeaPad s145-15ast
S/N PF1SBXFF
Board # FS44A&FS542A NM-C171 REV 1.0
AMD A6

Hello to all. The system boots up to Black Screen even on external Monitor...

Charging and power Leds are present. Fan kicks in once cpu come to tempreture..

I use EZP2023 To read bios chip then save two copies each being the exact size of 8,192kb. I am not sure if this size is the correct data that should be on said chip as I am DIY newbie when it comes to the Bios..

Thanks in advance for any Help!!

hi try not dmi

[SMDFlea]

Lenovo IdeaPad s145-15ast
S/N PF1SBXFF
Board # FS44A&FS542A NM-C171 REV 1.0
AMD A6

Hello to all. The system boots up to Black Screen even on external Monitor...
Charging and power Leds are present. Fan kicks in once cpu come to tempreture..
I use EZP2023 To read bios chip then save two copies each being the exact size of 8,192kb. I am not sure if this size is the correct data that should be on said chip as I am DIY newbie when it comes to the Bios..
Thanks in advance for any Help!!

Bios + DMI .

[foneRoc]

Thank you Shiyab for your Help I will try and update you...

[foneRoc]

Thank you SMDFlea for your help aswel.. However the system still does not give a display local or external.. Charging Led lit and when press power botton we get power LED as before.. Im not sure as to what to do next.. Any suggestions? Really cam use it TIa Forgive my late response..