Windows 10: Laptop sees PCs on the same network when on Ethernet but NOT when wireless?

I'm running a Dell laptop with Windows 10. When I have it connected to the Ethernet I can see all of the other PCs and servers on the network, including itself and the router. When I disconnect the Ethernet cable the laptop only displays itself and the router. All of the PCs on the network disappear when I switch from Ethernet to Wi-Fi on this laptop. All of the network settings on every computer and laptop are the same. What am I missing here?

:)

 

Using a router to connect PC with Ethernet

Well Ethernet isn't an option atm, and powerline networking depends on the wires you already have in the house (which will be very old) have any suggestions on top notch wireless network adapters?

 

Laptop drops connection to wireless network randomly.

My daughter has a laptop that keeps losing it's connection to the local wireless network - any local wireless network.
It will connect to any network, using security passwords, but then just drop off, after random amounts of time, ending in the message "The specified network is not available". A complete shutdown and cold start will allow a connection again, briefly.
Everything works fine on wired Ethernet cable.
Toshiba C55-C5241
Broadcom 802.11n Network Adapter

Looking for any potential fixes I have not already found on the interwebs (list below).
When she gets here today I am going to generate a Wireless Network Report (netsh command). Let me know if it would be helpful to see that report.
Tried:

• Updating the driver to the most recent one on the MS Update Catalog
• Making sure "allow the PC to put this device to sleep" is unchecked
• All other wireless devices connect to the LAN fine
• Move the laptop to the same room, withing 10 feet of the router.
• Reset the router
• Problem happens on 3 wireless LAN's.
• Created a Guest network with no security protocols.
• Problem happened before and after the 1903 upgrade
• USB selective Suspend: disabled
• Changed the Scan Valid Interval
• Set WLAN Auto Config in Services to Auto (was on Auto)

 

Losing network connection

Hello Dear, if you have a laptop or a PC with a wireless network adapter, you can see a list of available wireless networks and then connect to one of those networks. The wireless networks will only appear if your PC has a wireless network adapter installed, the adapter is turned on, and the wireless access point is in range.

1. Click Start, click Control Panel, click Network and Internet Connections, and then click Network Connections.

2. In the left pane, under Network Tasks, click View available wireless networks.
In case, If you don't see the network you want to connect to, click Refresh network list. If you see the network but the signal is weak, move the PC closer to the wireless router.

3. Click the network you want to connect to, and then click Connect.

4. If you're connecting to a secure network, type the security key, and then click OK.

I Hope you solve out your query soon.