*** User with any of the M14x R2 / M17x R4 / M18x R2 notebooks with a current BIOS have reported issues when using the Secure Boot / Fast Boot options in combination with the dedicated Nvidia / AMD GPU.("Can't detect MXM card GOP driver" in case of the R4 / M18x R2) The reason for this is simple - Dell never provided a vbios update which includes the necessary graphic drivers to make those feature work. The only UEFI compliant drivers in t