Why after I install my netgear wireless router the main computer where the router is connected shuts down?

Question

The computer shuts down after a few minutes or when husband uses the laptop.

Answer 1

virus?

(just got onto the internet, possibly for the first time)

Answer 2

The info you have provided is inadequate to answer the question.

Please explain how the router is connected to the network and how your so called "main computer" is connected. Also provide the info in regards to the LAN DHCP range and the wireless configuration and how the main computer is connected. Provide info on how the laptop is configured and connected as well.

We cannot determine anything from the info provided thus far.