Lenovo Legion Y740-17IRHg Bios Corrupted Need Help

[asusasus]

Hello everyone , my Lenovo Legion Y740-17lRHg Bios Corrupted Need Help

Model Name : 81UJ
Serial Number: MP1M554T

[hoaca388]

Re: Lenovo Legion Y740-17lRHg Bios Corrupted Need Help

Hello everyone , my Lenovo Legion Y740-17lRHg Bios Corrupted Need Help

Model Name : 81UJ
Serial Number: MP1M554T

Here

[asusasus]

Re: Lenovo Legion Y740-17lRHg Bios Corrupted Need Help

Here

Thanks but still not working

[hoaca388]

Re: Lenovo Legion Y740-17lRHg Bios Corrupted Need Help

Thanks but still not working

My file posted is the original file from Lenovo, you should look for another reason.

[alfredposadas09]

Re: Lenovo Legion Y740-17lRHg Bios Corrupted Need Help

Thanks but still not working

100% working bios if this not work then u have problem in hardware

[asusasus]

Re: Lenovo Legion Y740-17IRHg Bios Corrupted Need Help

Thank you guys , I think is the hardware issue

[Loki_Fido]

Re: Lenovo Legion Y740-17IRHg Bios Corrupted Need Help

Thank you guys , I think is the hardware issue

Hi bud,

Did you end up figuring out what the issue was?

Do let us know please

[Loki_Fido]

Hi bud,

Did you end up figuring out what the issue was?

Do let us know please

Update, I found a shorted GDDR5, after removing it i found the GPU was shorted with 0 ohms.
Usually, there will be integrated GPU with the processor. But in this laptop there wasn't. Therefore when the laptop was started, it just spins the fan and lots of lightworks only.

Had to be used for parts.

[Kyo_Kun2345]

Lenovo Legion Y740-17IRHg (Type: 81UJ, MB: LA-G132P, CPU: i7-9750H, GPU: RTX 2070), a failure occurred during a Bios update and the screen wouldn't turn on, but keyboard would light up. Backed up Bios bin file (see attachment) and attempted to flash the Bios chip (CH341A SPI Programmer with SOIC8 Test Clip, Software: Flashrom on Linux), using what I thought was a good Bios bin file. After a 'successful' flash the keyboard doesn't even light up now, even after I re-flashed back to the old Bios. Hoping to get a Bios file to attempt a flash.

[peste]

post merged...next time look for a thread with the name and model, motherboard model of the laptop, and post there, if you can't find it, then make a new thread..

[peste]

Lenovo Legion Y740-17IRHg (Type: 81UJ, MB: LA-G132P, CPU: i7-9750H, GPU: RTX 2070), a failure occurred during a Bios update and the screen wouldn't turn on, but keyboard would light up. Backed up Bios bin file (see attachment) and attempted to flash the Bios chip (CH341A SPI Programmer with SOIC8 Test Clip, Software: Flashrom on Linux), using what I thought was a good Bios bin file. After a 'successful' flash the keyboard doesn't even light up now, even after I re-flashed back to the old Bios. Hoping to get a Bios file to attempt a flash.

post S/N...

[Kyo_Kun2345]

post S/N...

S/N: mp1ltwab

Thanks for linking this, I'll be sure to search better in the future. I tested the Bios.bin file provided and it doesn't work. I assume that means this is hardware related?

[SMDFlea]

S/N: mp1ltwab

Thanks for linking this, I'll be sure to search better in the future. I tested the Bios.bin file provided and it doesn't work. I assume that means this is hardware related?

try

[Kyo_Kun2345]

@SMDFlea that worked, thanks so much!

[Kyo_Kun2345]

Well, it did work, now after a few reboots the keyboard lights up, but not the display (external display also gets no signal) so I clearly have a hardware issue in addition to the Bios one... thanks for your help again!!!

Update: Yep, definitely a hardware issue. I was able to get it to boot up, then while in the Bios screen went black and it shut down. I'll post again if I figure it out!