Your computer comes with a special configuration called Switchable Graphics. This configuration allows the system to use either the dedicated graphics card or the onboard graphics card. From our side, we can provide the graphics driver but it seems you have already installed it.
In any case, you can install the latest one at the following link:
If after installing the driver issue persists, my best recommendation is to contact the computer manufacturer so they can provide the correct configuration of the switchable graphics.