This needs to be resolved as my Y510p SLI does not work. It is not detected therefore only the first graphic card can be used.
I only just received my newly purchased y510p from NewEgg, and now see that I cannot upgrade to Windows 8.1 and keep my SLI, a feature which cost me an extra $200. NewEgg wants to charge a restocking fee if the laptop needs to be returned, though that might be negotiable NewEgg should not have to eat that loss either.
Per the nVidia representative, Lenovo's system does not update the VBIOS of an UltraBay video adapter. This needs to be fixed.
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
New vBIOS (video BIOS) has been released on 29 Oct 2013 that fixes this issue. Please find the download info link below.