Windows 7 PC unable to see router

stewart_page
stewart_page used Ask the Experts™
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I have a small network with a Windows 2008 SBS server, two Dell Windows 7 PC's, a hub and a router.  The network is running DHCP from the server, and the router DHCP is switched off.

Both the Server and one of the PC's can connect to the network, router and the internet.  The problem PC can ping the server and connect to the shares on the server, it can see and ping the other PC, but it cannot see the router, ping it or connect to the internet.

When I run the troubleshooter, it says everything is configured correctly, so I'm stuck.  When I run ipconfig /all, all the settings are correct, the IP has been assigned correctly, the DNS server is correct and the gateway IP address is there.  The machine was set up in the same way as the other PC that does work, so any help would be greatly appreciated.

Stewart
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did you try to run
ipconfig /release, /renew ?
ipconfig /flushdns, ipconfig /registerdns ?

how about router configuration ? maybe the mac addresses are blocked ?

Commented:
Is the problem pc wired or wireless? How about the other pc that works, wired or wireless? Did you use http://connect to join the pc's to the domain? Have you tried rebooting the problem pc? If you manually assign the problem pc with an ip address, subnet mask, gateway and dns what happens?

Author

Commented:
Hi
Yes, I did releae/renew/flush etc, but to no avail.  All PC's are wired, sorry i should have said.

The problem PC is in the domain and can access all domain resources except the router.  I tried manually adding the gateway, but it made no difference.  I can't even access the router web interface from that PC, it's as if it doesn't exist.
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did you try to directly connect to router with cable connection, after manually setting IP ?

Author

Commented:
Yes also tried the manual connection to the router, still didn't see it.
what is your ip / mask etc. router and pc configuration ?

Author

Commented:
PC settings
IP4: 192.168.0.11
SUBNET: 255.255.255.0
DNS: 192.168.0.2
GATEWAY: 192.168.0.1

ROUTER
IP4: 192.168.0.1
SUBNET: 255.255.255.0
Commented:
What type of router are you using?

sometimes there is a simple fix that if you have a lot of PC's is impractical. however with a small domain its a bit easer.

Shut down your workstations and your server,
Unplug your router and leave it for about 5 mins.
turn your router on and wait untill its totaly back up and running.
Next turn on your server and ensure that your DHCP and DNS services are running.
Now turn on the problem PC and see if the problem PC is still causing problems.

Sounds simple but somtimes DHCP and DNS have a problem with certain machines.

Author

Commented:
OK I'll give that a try, but it won't be until later today, so will get back to you.

Author

Commented:
Well, as wierd as it may seem, that was the solution.  Sometimes we can get too technical and miss the simple approach.  Thanks, one happy guy!!

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