@fagner-patricio OK so you have the latest version of the kernel. So lets debug a bit more.
Manually register this computer with FOG. You will need the mac address of the network adapter. You will create a host definition file with this action. Connect the host to an image (doesn’t matter which one at the moment as long as it exists).
Now schedule a deployment task to this computer. But before you hit the schedule task button, tick the debug checkbox. Now schedule the deployment task.
PXE boot the target computer. The computer should go right into imaging and not stop at the fog iPXE menu. After a few screens of text that you have to clear with the enter key you will be dropped to the FOS Linux command prompt on the target computer. NOTE: You will probably see the same errors as before, but in debug mode it should let you get to the command prompt.
Now at the FOS Linux command prompt key in the following.
ip a s
lspci -nn | grep -i net
grep -i firm /var/log/syslog
Snap a clear picture of the output and we will decide the next steps.