Rtx 3060 laptop no longer working after wrong vbios flash

[nikola87]

Hi all, like a fool I had flashed a vbios from another manufacturer for my rtx 3060 of the Lenovo Legion 5 model 82JU0069SP, and after restarting the pc it just gave a black screen. I can still access the laptop with the cpu's integrated gpu, but the Nvidia gpu now reports error code 43 and is no longer recognized by Nvidia software, even if it installs the drivers correctly. Is there a way to restore the original vbios and resurrect the gpu? What can I do?

 

[nikola87]

anyone who can help me find the correct vbios for my laptop?

 

[Apocalypsee]

Only thing is you can try VBIOS here one by one, you supposed bo backup the original VBIOS before messing with flashing with others.

TechPowerUp

Extensive repository of graphics card BIOS image files. Our database covers submissions categorized by GPU vendor, type, and board partner variant.

www.techpowerup.com

 

[Shou Miko]

I believe @eidairaman1 can help out here, but you need to take your laptop apart to show the ram chips and such if asked.

@nikola87 you didn't by any chance make a backup before flashing another bios onto your gfx?

 

[nikola87]

I believe @eidairaman1 can help out here, but you need to take your laptop apart to show the ram chips and such if asked.

@nikola87 you didn't by any chance make a backup before flashing another bios onto your gfx?

I had already opened the laptop when I changed the paste and cleaned everything, I hope this information can be useful

 

[Shou Miko]

I had already opened the laptop when I changed the paste and cleaned everything, I hope this information can be useful

Good, now you have a good baseline for what might come, give it time because depending on the time on where you are in the world and others it will take some time for them to be here and help.

If everything here fails try to reach out to Lenovo even your laptop went out of warranty back in June of 2023 they might be willing to send you the original vbios for the RTX 3060 that's in your laptop.

 

[nikola87]

Good, now you have a good baseline for what might come, give it time because depending on the time on where you are in the world and others it will take some time for them to be here and help.

If everything here fails try to reach out to Lenovo even your laptop went out of warranty back in June of 2023 they might be willing to send you the original vbios for the RTX 3060 that's in your laptop.

I also contacted Lenovo but obviously they are not able to provide me the vbios. I will wait patiently for someone who will do it for me

 

[Apocalypsee]

I also contacted Lenovo but obviously they are not able to provide me the vbios. I will wait patiently for someone who will do it for me

May I know what flasher did you use? I tried to flash my 3050 laptop before but I can't seem to find other VBIOS that work with it except for the one that I backup before flashing. Always have problems like too high power limit at idle or error 43 like you encounter.

 

[nikola87]

May I know what flasher did you use? I tried to flash my 3050 laptop before but I can't seem to find other VBIOS that work with it except for the one that I backup before flashing. Always have problems like too high power limit at idle or error 43 like you encounter.

I am using the latest version of Nvflash downloaded from this site, I tried all vbios as you suggested, but none of them worked, although the flash seems to be successful, but I always get a black screen when I reboot the laptop with discrete gpu only

 

[eidairaman1]

I believe @eidairaman1 can help out here, but you need to take your laptop apart to show the ram chips and such if asked.

@nikola87 you didn't by any chance make a backup before flashing another bios onto your gfx?

Nothing can be done unless if the user gets another exact same pcb by part number and gets a bios dump from it. No mobile is meant for bios flashing they are 1 and done.

I am using the latest version of Nvflash downloaded from this site, I tried all vbios as you suggested, but none of them worked, although the flash seems to be successful, but I always get a black screen when I reboot the laptop with discrete gpu only

See my statement. Expensive hard lesson to be learned from mucking with a mobile

@nikola87, get another mainboard that exactly matches your current 1, get a spi flasher and get a bios dump from the working board and flash the non working board using the spi flasher, make sure it is a green pcb spi flasher.

And after that don't flash any mobile computer please

 

[nikola87]

Nothing can be done unless if the user gets another exact same pcb by part number and gets a bios dump from it. No mobile is meant for bios flashing they are 1 and done.


See my statement. Expensive hard lesson to be learned from mucking with a mobile

@nikola87, get another mainboard that exactly matches your current 1, get a spi flasher and get a bios dump from the working board and flash the non working board using the spi flasher, make sure it is a green pcb spi flasher.

And after that don't flash any mobile computer please

Hi, is this not the mobo code? 5B21C22565
It's written on the sticker where the RAM is located.
And I googled it and it should be exactly this https://www.eetgroup.com/en-eu/5b21c22565-lenovo-mb-l82ju-nok-r75800h_rtx3060_6g-wid-w125986532

I took a screenshot of the back of the mobo, I think it should be the same as mine

 

[eidairaman1]

Hi, is this not the mobo code? 5B21C22565
It's written on the sticker where the RAM is located.
And I googled it and it should be exactly this https://www.eetgroup.com/en-eu/5b21c22565-lenovo-mb-l82ju-nok-r75800h_rtx3060_6g-wid-w125986532

I took a screenshot of the back of the mobo, I think it should be the same as mine

Make sure the cpu is the same series, especially the gpu, sometimes pcbs use different chips.

 

[Shou Miko]

Hi, is this not the mobo code? 5B21C22565
It's written on the sticker where the RAM is located.
And I googled it and it should be exactly this https://www.eetgroup.com/en-eu/5b21c22565-lenovo-mb-l82ju-nok-r75800h_rtx3060_6g-wid-w125986532

I took a screenshot of the back of the mobo, I think it should be the same as mine

Look up the serial number on your laptop under Parts click on built-as and see the Lenovo part number there and than check EETGroup.

Lenovo Warranty: https://pcsupport.lenovo.com/gb/en/warranty-lookup#/

@nikola87 are you from Norway? Sorry to ask buy the NOK on Lenovo machines usually indicates Norway.

Make sure the cpu is the same series, especially the gpu, sometimes pcbs use different chips.

Correct this is why I suggest him to check his serial number of the laptop on Lenovo's site under parts and than built-as to get the correct part number but if changes in manufacturing have changed than he will be out of luck.

 

[kiddagoat]

Yes, make sure that the MB you are ordering is the exact same one as you have now. You have the Part Number. Make sure there isn't any sort of revision. There have been times where a manufacturing does an update to a part and keeps the same Part Number but notes a revision similar to how desktop motherboards are.

In this case, since everything is integrated, you have to make sure it all matches. The part should include the GPU and CPU with the Motherboard.

As noted by @eidairaman1, mobiles now are one and done. They are not designed and meant to be flashed or cross-flashed. There are different versions of the mobile GPUs now and it isn't standardized since MXM modules pretty much went away. The manufacturer can set the power limits, clock speeds, etc. to suit how they want that particular system to run.

As noted in the TPU database. Each of the below would have their own SKU/Part Number attached to them.

GeForce RTX 3060 Mobile 80W = 900-1425 MHz
GeForce RTX 3060 Mobile 85W = 1035-1485 MHz
GeForce RTX 3060 Mobile 90W = 1163-1530 MHz
GeForce RTX 3060 Mobile 95W = 1215-1567 MHz
GeForce RTX 3060 Mobile 100W = 1267-1605 MHz
GeForce RTX 3060 Mobile 105W = 1305-1642 MHz
GeForce RTX 3060 Mobile 110W = 1342-1680 MHz
GeForce RTX 3060 Mobile 115W = 1387-1702 MHz

For the issue you are having now, I would order a replacement, install that into the laptop and get it up and running.

 

[nikola87]

Guys, in the end I managed to restore the original bios or at least I think that's it, thanks to Nvflash with the command nvflash64 --index=0 -6 filename.rom taken from guide on this site.
I downloaded the first Lenovo vbios (not verified) with the same tdp as the gpu and incredibly now the screen has turned on in discrete gpu mode only.
Unfortunately, however, another serious problem has arisen, the gpu is still not working, or rather it seems that the vram is no longer recognized, is it dead? and on the display there are purple and green lines, in short, the graphics card is as if it no longer exists.

What could have happened? What could I do? An attempt at cleaning and repasting? Try putting new thermal pads on the vram? Any advice is welcome.

 

[kiddagoat]

I see you have posted this topic on many other forums looking for help. From your post in Win- Raid it sounds like you have played with this a lot and flashed many different vBIOS to the system.

It also appears that when another user tried to help and gave you some reference material, you didn’t read it.

This is why we caution against this and vBIOS updates aren’t going to miraculously give you a boost in performance, especially on laptops.

The purple lines you are seeing are a hardware issue with the VRAM. If it were green, it would be the GPU core.

Depending how many times you’ve flashed this with whatever vBIOSes, you could have damaged the video card.

Was it having any issues before you started playing with it?

 

[eidairaman1]

Guys, in the end I managed to restore the original bios or at least I think that's it, thanks to Nvflash with the command nvflash64 --index=0 -6 filename.rom taken from guide on this site.
I downloaded the first Lenovo vbios (not verified) with the same tdp as the gpu and incredibly now the screen has turned on in discrete gpu mode only.
Unfortunately, however, another serious problem has arisen, the gpu is still not working, or rather it seems that the vram is no longer recognized, is it dead? and on the display there are purple and green lines, in short, the graphics card is as if it no longer exists.

What could have happened? What could I do? An attempt at cleaning and repasting? Try putting new thermal pads on the vram? Any advice is welcome.

Either still wrong bios or the gpu is damaged, get a exact match pcb from a parted out mobile and get a bios dump from it.

Once you do, STOP SCREWING WITH IT!

 

[nikola87]

I see you have posted this topic on many other forums looking for help. From your post in Win- Raid it sounds like you have played with this a lot and flashed many different vBIOS to the system.

It also appears that when another user tried to help and gave you some reference material, you didn’t read it.

This is why we caution against this and vBIOS updates aren’t going to miraculously give you a boost in performance, especially on laptops.

The purple lines you are seeing are a hardware issue with the VRAM. If it were green, it would be the GPU core.

Depending how many times you’ve flashed this with whatever vBIOSes, you could have damaged the video card.

Was it having any issues before you started playing with it?

Yes, it had started to make numerous bsods, even after formatting and during the configuration of Windows, it kept crashing and it became impossible to use it, so I decided to open it, clean it and change the thermal paste, when I turned it back on, purple and green lines appeared and the GPU was already no longer working, before flashing the vbios

Either still wrong bios or the gpu is damaged, get a exact match pcb from a parted out mobile and get a bios dump from it.

Once you do, STOP SCREWING WITH IT!

It could be the damaged GPU, in device manager there is also error 43

 

[eidairaman1]

Yes, it had started to make numerous bsods, even after formatting and during the configuration of Windows, it kept crashing and it became impossible to use it, so I decided to open it, clean it and change the thermal paste, when I turned it back on, purple and green lines appeared and the GPU was already no longer working, before flashing the vbios


It could be the damaged GPU, in device manager there is also error 43

Error 43 can stem from wrong bios or hardware fault.

You have 3 choices here now:

1. Get an exact matching pcb and get a bios dump from it and try to flash the non working unit, if that fails just swap the working pcb into it (huge risk of buying used parts and they are dead on arrival)

2. Go to a shop for advanced troubleshooting.

3. Abandon this project and sell it as parts, and get a new mobile. And DON'T screw with it.

The choice is yours.

Picking at scabs only causes more pain, or poking at a bear, large cat only makes it want to kill you.