Hello, Zerackman.
Welcome to Microsoft Community.
I have some ideas.
Have you continuously monitored the adapter in the Device Manager or Control Panel?
I'm not sure if the situation you're describing is that the network card cannot detect the network or the computer cannot detect the network card.
Perhaps you can try observing the network card in the Device Manager or the network adapter in the Control Panel.
(Win+R to open Windows Run -> type "Devmgmt.msc" to open -> Network adapters)
(Win+R to open Windows Run -> type "ncpa.cpl" to open)
If the network card disappears from the Device Manager when the network issue occurs, it means Windows can no longer detect the network card.
If the network card is still there and the network adapter in the Control Panel shows that the network cable is unplugged, then it means the network card cannot detect the connection of the network cable.
If there is no change, then it might be an issue with the router (packet loss, disconnection?).
If there are any updates, please feel free to reply.
Best regards.
Malygos - MSFT | Microsoft Community Support Specialist