I own a Vaio VGN-SZ38GP which came with two graphics cards, nVidia and Intel. Display is regulated through the stamina-speed switch present on the laptop. Stamina switch is for Intel graphics and speed switch is for nVidia graphics.
The switch started malfunctioning some time back and now the system is stuck with intel graphics. I did a lot of research, Q&A over the internet but couldn't find any solution. Some guy also refereed that the GPU is dead!
The device doesn't show-up on the device manager. Installing of nVidia drivers shows an error "Failed to update driver". Is the GPU really dead?