Nighthawk MR60 No internet connection when doing a 100mb/s between two computers

[Scribble1]

I have a gibibyte network switch plug into the router. when I transfer files between one and another the entire wifi network will not be able to connect to the internet 

[michaelkenward]

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@Scribble1 wrote:

I have a gibibyte network switch plug into the router. when I transfer files between one and another the entire wifi network will not be able to connect to the internet 

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I don't follow that. What is this network switch?

What are you transferring files between?

Your subject says two PCs.

Where does WiFi come into any of this?

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Just another user with time on their hands.

[Scribble1]

I have two pc connected to the ethernet which are connect to the router. when I try moving files between them all other devices connect to the internet will stop working.

[michaelkenward]

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@Scribble1 wrote:

I have two pc connected to the ethernet which are connect to the router.

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Both PCs are wired to the router?

There is a switch in there?

What is the layout?

MR60 > Switch > PCs

Then the usual boilerplate questions to eliminate some of the more common issues that crop up here.

What firmware version do you have on the device?

A number is more useful than "the latest". There may be newer versions, or "hot fixes", that do not show up if you check for new firmware with an app or in the browser interface.

If there is one it might also help if you told people the make and model number of the modem/gateway/ONT that connects this router to the Internet. Is it, by any chance, also a router, with a set of LAN ports on the back?

I ask because a lot of people turn up here trying to put a router behind a modem that is also a router. That can complicate troubleshooting.

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Just another user with time on their hands.