Bios crashed in E490 update bios

[myhp1998]

Re: Bios crashed in E490 update bios

I have a same E490 Lenovo laptop (FE490 NM-B911 rev 1.0) that cannot turn ON (blank screen, Keyboard CapsLock button light ON, Fan spinning and can feel warm from processor). Already took out battery and BIOS battery (short n put back) but still same. Any clue on how to troubleshoot and if this could be related to BIOS?

[Blackam8899]

Re: Bios crashed in E490 update bios

I'm having the same problem and I don't have a Vcore signal either, I tried several bios but it still has the same problem, I'm suspecting the CPU controller that doesn't pull the pwm to the integrated vcore, but it could also be a bios problem, I'm in an alley No Exit.

Does anyone have a BIOS that works correctly for E490?

[Blackam8899]

e490 nm b 911 rev 2.0 bios

Hello, my team model E490 20N9 lenovo with mother: e490 nm b 911 rev 2.0 bios.
IT TURNS ON THE POWER LIGHT AND THE CAPS KEY LIGHT BUT IT DOESN'T START, IT ONLY POLARIZES THE SCREEN IN BLACK, THERE IS NO vCORE SIGNAL. APPARENTLY IT IS A BIOS PROBLEM CAN SOMEONE CLEAN MY BIOS AND LEND ME A WORKING BIOS?

[hoaca388]

Re: e490 nm b 911 rev 2.0 bios

Hello, my team model E490 20N9 lenovo with mother: e490 nm b 911 rev 2.0 bios.
IT TURNS ON THE POWER LIGHT AND THE CAPS KEY LIGHT BUT IT DOESN'T START, IT ONLY POLARIZES THE SCREEN IN BLACK, THERE IS NO vCORE SIGNAL. APPARENTLY IT IS A BIOS PROBLEM CAN SOMEONE CLEAN MY BIOS AND LEND ME A WORKING BIOS?

Just calling is useless if you don't upload here the existing bios file on your computer.

https://www.badcaps.net/forum/showthread.php?t=103570

[Blackam8899]

Re: e490 nm b 911 rev 2.0 bios

Excuse me, I'll upload the file if someone can clean my bios or if they have a functional one, thanks in advance!

[hoaca388]

Re: e490 nm b 911 rev 2.0 bios

Excuse me, I'll upload the file if someone can clean my bios or if they have a functional one, thanks in advance!

E490 (Type 20N8, 20N9) Laptop (ThinkPad)

[Blackam8899]

Re: e490 nm b 911 rev 2.0 bios

E490 (Type 20N8, 20N9) Laptop (ThinkPad)

Thanks, I'll try it out and I'll tell you how it went later!

[Blackam8899]

Re: e490 nm b 911 rev 2.0 bios

E490 (Type 20N8, 20N9) Laptop (ThinkPad)

It did not work, it continues in the same sequence, sometimes Vcore is activated but another source of the cpu is deactivated, it polarizes the screen but does not give an image.

Can someone clean this bios?

[hoaca388]

Re: Bios crashed in E490 update bios

Here

[Blackam8899]

Re: Bios crashed in E490 update bios

Here

We tried it but it didn't work, the equipment turns on but doesn't give an image and Vcore doesn't work, there are no signals of the pulses in the IC PU401 pwm1. someone has something similar happen?

[Blackam8899]

Re: Bios crashed in E490 update bios

Hello I need EC DUMP for FE490 NM-B911 REV: 2.0 someone who can help?

I read its content with the SVOD and it is blank, the equipment turns on but its secondary sources such as Vcore do not work, it seems that the kbc is UNPROGRAMMED, someone to help? FE490 NM-B911 REV:2.0

[dgs3342]

Re: Bios crashed in E490 update bios

I thank the forum but I managed to solve it...

How did you resolved it?

[DaFluepp]

Re: Bios crashed in E490 update bios

Hi, can anybody repair my Bios-Dump for Thinkpad E490 ( 20N8-CTO1WW ).
thx Flueppi

[hardware1]

Re: Bios crashed in E490 update bios

Hi, can anybody repair my Bios-Dump for Thinkpad E490 ( 20N8-CTO1WW ).
thx Flueppi

Write your device serial number.
What's your device problem?

[DaFluepp]

Re: Bios crashed in E490 update bios

Serial : PF-1LRTWW , after Biosupdate only Blacksreen.

[hardware1]

Re: Bios crashed in E490 update bios

Serial : PF-1LRTWW , after Biosupdate only Blacksreen.

Here's your new file, try it and let me know.

[DaFluepp]

Re: Bios crashed in E490 update bios

thx very much, now system is beeping and blackscreen ( Code0001 )

[hardware1]

Re: Bios crashed in E490 update bios

thx very much, now system is beeping and blackscreen ( Code0001 )

What does you mean by code0001? Is it shown on the screen?

[DaFluepp]

Re: Bios crashed in E490 update bios

no, it is the beeping code from the app

[hardware1]

Re: Bios crashed in E490 update bios

no, it is the beeping code from the app

Maybe it's a hardware issue. create a new thread there.
https://www.badcaps.net/forum/forumdisplay.php?f=23