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      SLI Second Graphic Card is not Working After Updating to Windows 8.1 - IdeaPad Y400, Y500, Y410p, Y510p

      Symptom

      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

       

      Affected configurations

      The symptom above may occur to the following systems:

      IdeaPad Y400, Y500, Y410p, Y510p

       

      Under the following Operating systems:

      Microsoft Windows 8.1 64-bit

       

      Solution

      Update the vBIOS to support the latest Nvidia drivers on the Lenovo support site.  This update will restore recognition of the second video adapter in the ultrabay and ensure maximum graphic performance, especially in demanding applications like 3D intensive games.

      IdeaPad Y400, Y500:

      NVIDIA GeForce GT650M Second VGA BIOS Update for Windows 8.1 (64-bit) 

      NVIDIA GeForce GT750M Second VGA BIOS Update for Windows 8.1 (64-bit)

      IdeaPad Y410p, Y510p:

      NVIDIA GeForce GT750M Second VGA BIOS Update for Windows 8.1 (64-bit)

      NVIDIA GeForce GT755M Second VGA BIOS Update for Windows 8.1 (64-bit)

       

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      • Alias ID: IN20131031-001
      • Document ID: HT079946
      • Last Updated :26 Mar 2014
      • © 2016 Lenovo