In theory, that sounds like an excellent idea, but in practice, problems abound. There are devices and operating systems that can’t really tell what the user is doing or when the correct display adapter should be activated. Other problems come when you can change the resolution or refresh rate because the weaker display adapter as marked as the default one. For ways to make a certain display adapter as default, follow the methods below.
Method 1: Find and Flip the Dedicated Switch
Certain laptops, such as Sony Vaio S, have dedicated switches that tell it which graphics card to use. This switch is found near the CD/DVD drive and has two settings: Stamina and Speed. Stamina position uses the weaker graphics card and Speed uses the stronger one. Try flipping the switch and see if the problem is solved. If not, try the next method.
Method 2: Add the Program to the Display Adapter Manually
All strong graphics cards come with a control center when installed. It will usually be accessible through the right-click context menu when you click on the desktop.
For NVIDIA:
For AMD:
How to Open and change Settings in NVIDIA Control Panel?
Do the same in Catalyst Control Center: I have Radeon and tried it on my PC, I can’t find the community guide for that anywhere
Method 3: Disable the Integrated (weaker) Display Adapter in the BIOS
To enter BIOS, you need to hit a certain key on the keyboard as the device is starting up. There is a great range of possibilities when it comes to which key that might be, for example, F1, F2, F5, DELETE, and so on, and this key is usually shown during startup. Either watch closely as the device boots or search online for more information. In any case, tap that button as the device is booting up and you should enter BIOS. Again, each BIOS has different settings and you will have to go over all the options and enter every sub-menu until you find the option Primary Graphics Adapter. Here you want to set the IGP (Integrated Graphics Processor) to the lowest priority and your PCI-E slot to the highest priority. Once you’re done, accept all changes, exit BIOS and restart the device.
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