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Old 11-16-2017, 02:09 PM   #1
Francisco.s
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Default Need bios for la-b091

Need bios for Lenovo B50 mobo la-b091p.

I've already tried some dumps, but none of them seems to be the correct one.

(BIOS LENOVO A8CN33WW(V2.01))

I've also reprogrammed the Nuvoton embedded controller NPCE288N.

Problem is that doesn't post correctly. has no video on lcd nor external connector.

thanks.

This is the bios backup:
la-b091p.zip

Forgot to mention that it behaves the same with or without ddr3 memory.

Last edited by Francisco.s; 11-16-2017 at 02:12 PM..
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Old 11-16-2017, 05:04 PM   #2
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Default Re: Need bios for la-b091

A8CN54WW clean dump bios
Attached Files
File Type: zip a8cn54ww.zip (3.73 MB, 435 views)
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Old 11-17-2017, 03:47 AM   #3
Francisco.s
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Default Re: Need bios for la-b091

Quote:
Originally Posted by Elsid79 View Post
A8CN54WW clean dump bios
Hi, thanks for your dump.

It doesn't works for me.

I don't know if it is a compatible dump. I can not find the original one.(A8CN33WW(V2.01))

I've also tried other dumps like $A8CN53WW(V3.06) and not work either.

When power-on, input current raises from 13 mA. to 220 mA. ant past 5 seconds input current goes back to 13mA.

CPU voltage are OK, but it stays cold.

Any comments will be appreciated.
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Old 11-17-2017, 06:12 AM   #4
Elsid79
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Default Re: Need bios for la-b091

Do you program two flash drives, main bios flash and EC bios ? try it

Lenovo_b50-80-80lt
bios a8cn38ww(v2.03)
ec a8ec38ww(v2.03)
Attached Files
File Type: rar LENOVO_B50-80-80LT.rar (3.74 MB, 507 views)

Last edited by Elsid79; 11-17-2017 at 06:18 AM..
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Old 11-17-2017, 08:31 AM   #5
Francisco.s
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Default Re: Need bios for la-b091

Quote:
Originally Posted by Elsid79 View Post
Do you program two flash drives, main bios flash and EC bios ? try it

Lenovo_b50-80-80lt
bios a8cn38ww(v2.03)
ec a8ec38ww(v2.03)
Hi, there's only one bios inside the rar file, and as I commented at the begining, I've also reprogrammed the Nuvoton embedded controller NPCE288N with a file from another website.

Thanks.

Pd: this is the file programmed to kbc:
kbc la-b091p.rar
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Old 11-17-2017, 05:03 PM   #6
Elsid79
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Default Re: Need bios for la-b091

try it dump KBC
lenovo b50-80 ec LA-B091P
nuvoton 288
Attached Files
File Type: zip la-b091p_read_ok.zip (61.3 KB, 345 views)
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Old 11-18-2017, 08:59 AM   #7
Francisco.s
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Default Re: Need bios for la-b091

There is no difference with this nuvoton 288 file, it behaves the same.

It seems like main bios is corrupted or cpu/memory problem.

Main bios receives pulses at pin 1, but seems to hang in the process. (only a few pulses, I think not enough to complete POST)

Perhaps with the correct dump, it works.

Captura.JPG
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Old 01-17-2018, 01:33 AM   #8
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Default Re: Need bios for la-b091

Elsid79 Tesekkürler.Sizin verdiginiz bios çalıştı.A8CN54WW clean dump bios working teşekkürler...
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Old 02-18-2018, 11:17 PM   #9
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Default Re: Need bios for la-b091

Quote:
Originally Posted by Elsid79 View Post
A8CN54WW clean dump bios
Elsid79 thanks boss. dump is working.
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Old 12-01-2018, 12:24 PM   #10
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Default Re: Need bios for la-b091

Need bios for Lenovo B50-80EW

i5 cpu
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Old 06-18-2019, 02:39 AM   #11
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Default Re: Need bios for la-b091

Quote:
Originally Posted by Elsid79 View Post
A8CN54WW clean dump bios
working
ty so much
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Old 07-22-2019, 08:49 AM   #12
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Default Re: Need bios for la-b091

thanks
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