The instructions below describe several ways to disable the integrated video card on a laptop or computer and make sure that only a discrete (separate) video card works, and integrated graphics are not involved.
Why might this be required? In fact, I never met the obvious need to disable the built-in video (as a rule, a computer uses discrete graphics, if you connect a monitor to a separate video card, and a laptop skillfully switches adapters as needed), but there are situations when, for example, a game It does not start when integrated graphics and the like are turned on.
Disabling the integrated video card in BIOS and UEFI
The first and most reasonable way to disable the integrated video adapter (for example, Intel HD 4000 or HD 5000, depending on your processor) is to go into the BIOS and do it there. The method is suitable for most modern desktop computers, but not for all laptops (on many of them there is simply no such item).
I hope you know how to enter the BIOS - as a rule, just press Del on the PC or F2 on the laptop immediately after turning on the power. If you have Windows 8 or 8.1 and fast boot is enabled, then there is another way to get into the UEFI BIOS - in the system itself, through changing computer settings - Recovery - Special boot options. Further, after a reboot, you will need to select additional parameters and find the entrance to the UEFI firmware there.
The BIOS section that is required is usually called:
- Peripherals or Integrated Peripherals (on PC).
- On a laptop, it can be almost anywhere: in Advanced and in Config, just looking for the right item related to the schedule.
The functioning of the item for disabling the integrated video card in BIOS also varies:
- Simply select “Disabled” or “Disabled”.
- It is required to set the PCI-E video card first in the list.
You can see all the main and most common options in the images and, even if your BIOS looks different, the essence does not change. And, I remind you that there may not be such an item, especially on a laptop.
Using the NVIDIA Control Panel and Catalyst Control Center
In the two programs installed with the drivers for the discrete graphics card - NVIDIA Control Center and Catalyst Control Center, you can also configure the use of only a separate video adapter, and not built-in processor.
For NVIDIA, the item for such a setting is in the 3D settings, and you can install your preferred video adapter for the entire system as a whole, as well as for individual games and programs. In the Catalyst application, a similar item is in the Power or Power section, the Switchable Graphics sub-item.
Disconnect using Windows Device Manager
If you have two video adapters displayed in the device manager (this is not always the case), for example, Intel HD Graphics and NVIDIA GeForce, you can disable the built-in adapter by right-clicking on it and selecting “Disable”. But: here your screen may turn off, especially if you do it on a laptop.
Among the solutions are a simple reboot, connecting an external monitor via HDMI or VGA and adjusting the display settings on it (turn on the built-in monitor). If nothing works, then in safe mode we try to turn everything on as it was. In general, this method is for those who know what they are doing and are not worried about the fact that they may then have to suffer with a computer.
In general, there is no sense in such an action, as I already wrote above, in my opinion in most cases.