Lenovo S340-14IWL, S340-15IWL, S340-15IWL Touch, C340-15IWL, FLEX-15IWL Type:81N8

[Bonzas]

Working Bios, Extracted from lenovo site

[Simon16]

Lenovo s340-15iwl 81n8 el5c3 el531 el431 la-h101p rev 1_0

Hello,
Please can someone help me with this bios.
Copy attached.
Thanks
Ramon

[peste]

Re: Lenovo s340-15iwl 81n8 el5c3 el531 el431 la-h101p rev 1_0

Hello,
Please can someone help me with this bios.
Copy attached.
Thanks
Ramon

try the bios from post # 1.

[Simon16]

Re: Lenovo S340-14IWL, S340-15IWL, S340-15IWL Touch, C340-15IWL, FLEX-15IWL Type:81N8

Working Bios, Extracted from lenovo site

Thanks!
The laptop is working again.

[slowgrind]

Re: Lenovo S340-14IWL, S340-15IWL, S340-15IWL Touch, C340-15IWL, FLEX-15IWL Type:81N8

Do I need to copy 'MACHINE DATA' and 'WINDOWS KEY' from old damaged BIOS to a new virgin BIOS from lenovo in order for Ideapad C340 to boot again?
What data from the dump has to be copied? Something like UUID etc?

Thank you

[peste]

Re: Lenovo S340-14IWL, S340-15IWL, S340-15IWL Touch, C340-15IWL, FLEX-15IWL Type:81N8

do i need to copy 'machine data' and 'windows key' from old damaged bios to a new virgin bios from lenovo in order for ideapad c340 to boot again?
What data from the dump has to be copied? Something like uuid etc?

Thank you

DMI

620000 - 621FFF (0x0620000 - 0x0621FFF)

A90000 - A9003F (0x0A90000 - 0x0A9003F)
.

[ziko07]

Need bios lenovo ideapad s340-15IWL

When power button pressed led goes on and after second goes off. I think bios problem. In attachment is ori readed

Tnx

[peste]

Re: Need bios lenovo ideapad s340-15IWL

When power button pressed led goes on and after second goes off. I think bios problem. In attachment is ori readed

Tnx

read post #3 and #6...

[gigasi]

Re: Lenovo S340-14IWL, S340-15IWL, S340-15IWL Touch, C340-15IWL, FLEX-15IWL Type:81N8

Hello, I have a Lenovo C340-15IWL notebook, I have already tried the bios in post1 but it remains the same, it turns on but there is no video. I do not have the original bios since it went to another place and they brought it to me without the bios chip installed. Is there anything else to do? thank you.

[peste]

Re: Lenovo S340-14IWL, S340-15IWL, S340-15IWL Touch, C340-15IWL, FLEX-15IWL Type:81N8

Hello, I have a Lenovo C340-15IWL notebook, I have already tried the bios in post1 but it remains the same, it turns on but there is no video. I do not have the original bios since it went to another place and they brought it to me without the bios chip installed. Is there anything else to do? thank you.

maybe it has another problem.. check voltages on the coils, change the ram memory, check the display, LVDS cable, video chipset.. is there a picture on the external screen??

[gigasi]

Re: Lenovo S340-14IWL, S340-15IWL, S340-15IWL Touch, C340-15IWL, FLEX-15IWL Type:81N8

maybe it has another problem.. check voltages on the coils, change the ram memory, check the display, LVDS cable, video chipset.. is there a picture on the external screen??

I have tried other ram and hdmi. and it doesn't do anything else. With the LVDS connected the screen tends to blink but without brightness. but as you say it obviously has to be another problem. thank you

[brock-s]

Trying to remove a power-on password on a Lenovo Ideapad S340-15IWL, serial number MP1LXEN3. I tried the method in section 3.7.3 of BIOS guides, methods, resources and tools. Specifically, I read the bios (actually, read it twice (removing and reinserting the chip from the programmer between 1st and 2nd read) and verified SHA-256 checksums to verify good read), cleared the chip, then programmed the bios that I had read back to the chip (I then re-read the chip and verified the sha-256 checksum to verify it programmed correctly).

After doing this, upon power-on, the power led comes on for about 4 seconds, then the laptop shuts off. No fan, no other lights, nothing on the screen whatsoever (the laptop booted normally to a power-on password prompt prior to this).

I've searched the forums and could not find a solution to this problem.

The eeprom is an XMC QH128AH1G, and was read as a W25Q128FV using a TL866A programmer.
The embedded controller is an ENE KB9022Q.

Motherboard is labelled as "EL5C3/EL531/EL431" LA-H101P Rev 1.0.

Not sure if I lost something important from a protected region of the eeprom chip when I erased it, or if the bios needs some work after doing a read->clear->program.

Wondering if anyone has any advice or seen this before?

[peste]

merged post..

[peste]

Trying to remove a power-on password on a Lenovo Ideapad S340-15IWL, serial number MP1LXEN3. I tried the method in section 3.7.3 of BIOS guides, methods, resources and tools. Specifically, I read the bios (actually, read it twice (removing and reinserting the chip from the programmer between 1st and 2nd read) and verified SHA-256 checksums to verify good read), cleared the chip, then programmed the bios that I had read back to the chip (I then re-read the chip and verified the sha-256 checksum to verify it programmed correctly).

After doing this, upon power-on, the power led comes on for about 4 seconds, then the laptop shuts off. No fan, no other lights, nothing on the screen whatsoever (the laptop booted normally to a power-on password prompt prior to this).

I've searched the forums and could not find a solution to this problem.

The eeprom is an XMC QH128AH1G, and was read as a W25Q128FV using a TL866A programmer.
The embedded controller is an ENE KB9022Q.

Motherboard is labelled as "EL5C3/EL531/EL431" LA-H101P Rev 1.0.

Not sure if I lost something important from a protected region of the eeprom chip when I erased it, or if the bios needs some work after doing a read->clear->program.

Wondering if anyone has any advice or seen this before?

you have everything you need at post #1 and #6...

[brock-s]

"It's ALIVE!!!" [in my best Dr Frankenstein voice impression]. In all seriousness, I sincerely appreciate your help and pointing me to the right spot. It now works as it should. Thank you!!