I have a Geforce GTS 450 and a motherboard integrated ATI Radeon 3000 IGP into the AMD 760G chipset. The integrated GPU has the default Windows 7 driver provided by Microsoft and is shown in Device Manager as "AMD 760G", while for my Geforce card I have installed the latest driver by nVidia.
My ASRock motherboard does not have an option to switch between the two video cards and the system always boots up with the Geforce card regardless on which graphics card I have connected the VGA cable. (if I connect the cable to the motherboard's video slot it just boots up with a black sceen until I connect the cable back to the discrete GPU).
So my question is: how can I switch to the integrated GPU without removing my Geforce card? Thanks for any replies, I have been trying to tackle this problem for weeks but I haven't found a solution yet.
Edit: Plase note that my question is diferrent from this question: Windows 7: Switching between Nvidia GPU and onboard intel HD graphics in desktop PC. My intergated GPU is AMD Radeon 3000 and not Intel HD Graphics. Also I don't use the Lucid Virtu MVP software. (That software seems to have been discontinued anyway, the link to the app's page is broken).