But this is a sony and my experience is that you use the preinstalled factory OS and it all works.
If it doesn't then you call Sony to arrange for repair.
I can't find what failed here but there are folk that are looking like you did for controls to the GPUs and don't find them. It's not missing as there are none. This system is supposed to be fully automatic as long as you run the stock installed OS.
I have 410mGPu which is supports optimus technology but sony vaio intel graphics not showing in device manager i have only nvidia 410m listed.. also i check on everest it says intel hd disabled how to enable this ? i looked on bios but i couldn't find any settings there is only Hardware VM option under the advanced tab.
sony vaio model: vpceh1s1/b
is this laptop does not support optimus? but intel hd graphics driver is installed and i can't remove and find in device manager is there another way to enable onboard video to work with nvidia optimus ??