I guess you installed in UEFI mode. Mount your USB's EFI partition and copy it to the desktop. Mount the EFI partition on your installation drive and copy the EFI partition to it. Open the config.plist with Clover configurator, or your favourite plist editor and under Boot > Boot Arguments > use the + and type in
This is for your 750 TI, it disables the OS X drivers and loads the nVidia web drivers.