There are a few reasons for another PC not to show. From a long standing issue with the Network Neighborhood (still somewhat broken after 3 decades (1995!) to firewalls in your router to finally PCs should not show if there is nothing shared.
There is no step by step here because it's rarely the same cause.
I have installed and configured a home network using a TP-Link Archer C7 router with a main computer (Wired to the router), a Dell Optiplex 7050 Desktop running Windows 10 Professional 64 bit and a Dell Inspiron 14 5000 series Laptop (wireless) running Windows 10 Home edition 64 bit.
From the Inspiron Laptop, I am able to see and access the Optiplex Desktop, but from the Desktop I cannot see the Laptop at all.
Any advice or suggestions on how to get the wired pc to see the Laptop?
I am not an expert but I can follow directions well, Please help.
Thank you.

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