After updating to Windows 8.1 and related Nvidia graphic card drivers, customers may experience the following symptoms
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
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:
IdeaPad Y410p, Y510p: