One machine on network can't connect to Internet

I have a wireless network with 3 PCs and a laptop. All machines are
connected to the wireless network. 1 PC is not connecting to the internet.
What could be causing this problem? No changes were made to this PC nor the
network. Have Verizon DSL with modem and router connected to main PC.
Laptop has wireless card and 2 PCs have USB network adapters. Have tried
swapping USB adapters on the 2 PCs - didn't connect to internet. Have tried
disconnecting modem, router, adapters, etc. - didn't connect. Any insight
would be appreciated.

Hi
Many things can be wrong, in order to find out what is wrong you have to
start step wise "Debugging" of the system.
Network in general, http://www.ezlan.net/debug.html
Wireless issues, http://www.ezlan.net/wireless.html
Jack (MVP-Networking).

"brez717" <(E-Mail Removed)> wrote in message
news:2BBA1B12-D0A6-417D-AEF8-(E-Mail Removed)...
>I have a wireless network with 3 PCs and a laptop. All machines are
> connected to the wireless network. 1 PC is not connecting to the
> internet.
> What could be causing this problem? No changes were made to this PC nor
> the
> network. Have Verizon DSL with modem and router connected to main PC.
> Laptop has wireless card and 2 PCs have USB network adapters. Have tried
> swapping USB adapters on the 2 PCs - didn't connect to internet. Have
> tried
> disconnecting modem, router, adapters, etc. - didn't connect. Any insight
> would be appreciated.