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  • Registered: ‎07-09-2019
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Need older BIOS for Z470 (NVIDIA GPU error 43 after update)

2019-07-09, 13:34 PM

I upgraded my bios from factory version to 4acn38ww and NVIDIA GeForce 540m is not available anymore. It's visible in the device manager but it's stopped with code 43. I tried updating the drivers, reinstalling them but it didn't work. Same with ubuntu  (I have dual boot) - first after bios update, I couldn't start gui and it started working only after I removed all nvidia drivers (it changed to integrated graphics).

I cannot find the older version of BIOS anywhere except here:
But this is in Chinese and as far as I see I need to be a registered member and have some points to download it.


Does anyone know where I can find the older version?


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Re: Need older BIOS for Z470 (NVIDIA GPU error 43 after update)

2019-09-19, 1:51 AM

Hi przecze.


Thanks for reaching us for here in our community forums.


We checked further for any lower version of the BIOS, but there're no longer available. Could you try the other BIOS update from our support website? You may access it here:https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/ideapad-z-series-laptops/ideapad-z470/downloads/driver-list/component?name=BIOS%2FUEFI Please see the picture for reference.

Let us know how it goes.

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