I understand that you PC show two graphics card and you need to know whether you can disable intel graphics on your PC.
Don't worry I will try to help you out.
Did you make any software or hardware changes on your PC?
You cannot disable the integrated graphics however, you can disable discrete graphics on your PC by going to BIOS.
By default, a computer with Dynamic Mode switchable graphics uses the integrated, or power-saving, GPU for most applications. The computer will automatically switch to the discrete, or high-performance, GPU when an application requires more performance. Customers can configure which applications require the high-performance GPU by selecting the application in the Catalyst Control Center software. When an application is configured to use the high-performance GPU, the computer switches graphics solutions when the application is started or closed.
Refer this article to know how to use Switchable Graphics on Notebooks.