Problem to close the instructions commands The monitor stops and it is idle to me ?

Hello,

I have created a USB stick with OpenCore.

I tested the USB key, I have the commands of instruction but after a while the monitor screen stops and it is idle to me ?

In the "config.plist" file and in "DeviceProperties" I have no graphics card only the processor that is also graphic. Here is my EFI > EFI ou bien EFI

Thank you in advance for your answers