a.     Click on Start, and then click on Run.

b.    Type “devmgmt.msc” without quotes, and then click OK. Device Manager opens.

a.     Expand Display Adapters.

b.    Check if you are able to see both the graphics card.

c.     You may right click on the graphics card and click on Disable.

Step 2 : Disable the integrated (weaker) display adapter in the 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 PCIE slot to the highest priority. Once you’re done, accept all changes, exit BIOS and restart the device.

Step 3

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 desktop. In the case of NVIDIA, the option is called NVIDIA Control Panel.

Open it and select the Manage 3D Settings option.

Program Settings tab will allow you to choose the default display adapter for any program. Click Add, find the .exe file of the program you want to use with NVIDIA display adapter and click OK. If you want to make NVIDIA default for every program, go to the Global Settings tab and the dropdown menu titled Preferred graphics processor. You will see the choice between “Integrated graphics” and your NVIDIA card. Click the NVIDIA name and close the NVIDIA Control Panel.

With Radeon cards, the same thing is called Catalyst Control Center. Open it, click Gaming and click 3D Application Settings. Here you will click Save, which will open the dialog to search for an .exe file. Find it, click OK, select it from the dropdown menu below and adjust any options you need. You can manage the settings in Application Profile section underneath Gaming.

If the comments are helpful please click on "like"