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Y410p, Y510p: SLI is not working in Win 8.1

Question

Windows 8.1 is now available.  With the latest Nvidia drivers for 8.1 x64, SLI is not an option.  There are various suggestions to roll back to earlier (or earliest) Nvidia drivers for a solution.  It is true, that with these drivers, SLI is now an option - and it is possible to set it to Enabled. However, it doesn't work.

 

I have 8.0 and 8.1 in dual boot, for easy comparison.  SLI in 8.0 - clearly working... great performance.

SLI in 8.1 - not SLI performance, and in GPU-Z, it is clearly shown that one GPU is not under any load (also, not getting hot... further evidence).

 

At the moment, I have to use the 8.0 install only for gaming.  Can someone please tell me -

1. Is 8.1 currently supported for the Y510p

2. If so, when can we expect drivers for SLI

3. Has anyone found a good workaround?

Answer

After updating to Windows 8.1 and related Nvidia graphic card drivers, customers may experience the following symptoms

-          Second graphic card is not detected or SLI is disabled

-          Nvidia panel indicates only one graphic card instead of two

-          Can install the graphic card driver but SLI is not working

-          SLI is enabled with legacy drivers but performance drops

 

You need to update vBIOS (video BIOS) which Lenovo just released it on 29 Oct 2013.

  

IdeaPad Y410p, Y510p:

NVIDIA GeForce GT750M Second VGA BIOS Update for Windows 8.1 (64-bit) - IdeaPad Y410p, Y510p

NVIDIA GeForce GT755M Second VGA BIOS Update for Windows 8.1 (64-bit) - IdeaPad Y410p, Y510p

  

Attention: Do not power off or restart your computer during the VBIOS flashing process, which will cause serious damage and improper functioning of your computer.

For Y400 and Y500 vBIOS, please check out this knowledge based article for more info.

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Comments

IYasserr On 2013-11-08, 10:07 AM

please I have y510p and i installed y500 bios & didn't work  now please help me how can i recover ( clean this vBios )  pleaseeeeeeeeeeeeeeee

Cleo_Lenovo On 2013-11-12, 2:30 AM

 IYasserr, I'm sorry, I don't have an answer for you because it's swapping the wrong vBIOS (video BIOS) I suggest you send for repair.

thewatermellon On 2013-11-17, 1:06 AM

When I run the .bat file like the instructions say, a window opens, runs a couple lines and promptly closes.  It doesn't seem to do anything...  Please help!  I have a Y510p with the GT750

thewatermellon On 2013-11-17, 9:50 AM

nevermind!  I solved my own problem.  Thanks

andyP On 2013-11-21, 23:35 PM
dbova On 2013-11-25, 23:40 PM

Does this mean the Y410P will/does have an SLI option?

spartan117x7 On 2013-11-26, 4:43 AM

So I got off from talking with Lenovo Rep. I also wanna get the y410p with sli. He/She seemed kinda slow... but oh well.

You have been connected to ^Sirish Tallapragada.
Thank you for contacting Lenovo Sales Chat. My name is Sirish. My rep id is 2900713381. Happy to help you today.
Hi I am interested in purchasing the y410p either with nvidia 750m or 755m sli. Do you have any idea when they are releasing the ultrabay graphics modules for these? They already have the ultrabay 650m for the y400s so I'm guessing you guys will continue the trend.
Yes, We have that machine.
Yes, but they only have one graphics card in it. Is there an ultrabay module for the y410p's?
on the site, its called sli, like the y510p's do
The Y410p is available with the GT750m and the GT755m
Yes I know, but there is an ultrabay slot in the Y410p.
Which can be used to put in another gt750m/gt755m graphics card. This can be done on Y510p via putting this in: (I gave the link for the ultrabay 750m for y510p/y500)
will this option be available for the Y410p is my question
Okay
Will lenovo release the card I mentioned above that fits the y410p? The current one only fits the y510p
The link that you gave is for Y510p
I know.
Will you release a similar model that fits the y410p?
Yes, We will do that.
That might be available next month
Ok, great, I am looking forward it as a Christmas present. Thanks, that's all my concerns for today


I've heard other forums saying that they keep on saying in on month but I don't trust lenovo anymo....

ExcelsiorMax On 2013-12-02, 17:58 PM

Is this fix now preinstalled for the Y510P  laptop model#  59405667  that has Windows 8.1 and the dual SLI GT755M?

andyP On 2013-12-06, 14:01 PM

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