Cannot Connect GS105 Switch

[Sandman52]

I am trying to connect my Netgear GS105 network switch. An ethernet cable is connected to my router/modem combo to the switch and the green lights are lit. The yellow cable is connected to my router/modem combo. The two cables (blue and white) are running to a TV and PC but they will not connect to the internet. There is no network connectivity at these devices.  As you can see, the lights are not lit for blue and white cables that are connected to other devices. 

I have verified all ethernet cables do work and they are not faulty. I have tried several different cables as well and still nothing.  I have also plugged all the cables into various ports and still nothing. Any ideas on a fix?

[plemans]

can you ping from one device to the other?

do the devices get an IP address?

[Sandman52]

Yes I can ping and they get an IP address

[plemans]

The GS105 is a simple unmanaged switch. it doesn't do any packet inspection/blocking/etc. 

So if your devices are getting a ip address and respond to a ping, the switch is working. 

I'd be looking at your router 

[Sandman52]

I am wondering if there is a router setting that is preventing the switch from working. Is there anything particular that is a common issue with router settings that can resolve the issue?

[plemans]

what router do you have? 

Are you using any form of access control, parental management, etc?

[Sandman52]

Motorola Cable Modem plus AC1600 router. Unsure on settings since I am using the default settings.