Lost Internet Connectivity

[socav]

I'm the unofficial go-to guy for computer problems at work, and I hav
a problem that I think is beyond me

This morning, my boss turned on his computer, and had no internet.
Nothing had been touched since he last used the computer, whe
everything worked fine. No one had even been in his office, excep
when an employee came in to clean. However, the network worked -- h
could send/receive files with other computers on the network -- bu
neither Intenet Explorer nor AOL could connect to the internet. A
first, this was the only apparent error, but after I starte
switching NICs, I got something else. The Local Area Connectio
became labeled "limited or no connectivity" and when
clicked "repair" under the support tab of the Local Are
Connection Status window, it failed because the IP address could no
be renewed. As you can see below, I tried a lot of things, an
nothing has worked. I've ran out of ideas. Please, an
suggestions??

What doesn't work
Update programs can't connect to the interne
AOL can't connect to the interne
IE can't connect to the interne
Will not successfully ping 192.168.0.1 or 192.168.1.
ipconfig does not list a default gateway addres
ipconfig does not list a DNS suffi

[b:7b4a71812f]What works:[/b:7b4a71812f
The network -- all computers that can typically be accessed by thi
computer can be accessed, and can access this compute
Other computers on the network can access the interne
All hardware seems to be working correctl
Will successfully ping IP address of computer (169.254.?.?
Will successfully ping 127.0.0.

[b:7b4a71812f]What I've tried:[/b:7b4a71812f
Ran Spykille
Ran Ad-Aware SE Personal (latest definitions
Ran Norton Anti-virus 2002 (latest definitions
Did a System Restore to 3-2-06 (when internet worked
Unplugged/replugged power to switc
Switched NIC with known working NI
Put NIC in known working PCI slo
Plugged PC into known working outlet/cabl
Computer has been rebooted multiple times throughout all thi
(obviously

[b:7b4a71812f]Description of network[/b:7b4a71812f
Cable broadband (I believe
All of the computers (9) are plugged into a Linksys 16-port switc
(sorry, no model #). I have no idea what the switch is plugged into
There is a D-link wireless router (sorry, no model #) plugged int
the switch, which works fine

[b:7b4a71812f]The OS(s) used[/b:7b4a71812f
The computer with the problems is running XP PRO SP
Five other computers are running the sam
One computer is running XP PRO SP1
Two computers are running Windows 98 (1 SE, 1 Regular (I believe)
(One of these lost internet connectivity last week, not sure if thi
is related

Please, any ideas would be appreciated

 

[socav]

Yes, I took the PC into another office and used the (known working
cable from in there

Thanks for the reply

 

[Simon]

I'm the unofficial go-to guy for computer problems at work, and I have
a problem that I think is beyond me.

This morning, my boss turned on his computer, and had no internet.
Nothing had been touched since he last used the computer, when
everything worked fine. No one had even been in his office, except
when an employee came in to clean. However, the network worked -- he
could send/receive files with other computers on the network -- but
neither Intenet Explorer nor AOL could connect to the internet. At
first, this was the only apparent error, but after I started
switching NICs, I got something else. The Local Area Connection
became labeled "limited or no connectivity" and when I
clicked "repair" under the support tab of the Local Area
Connection Status window, it failed because the IP address could not
be renewed. As you can see below, I tried a lot of things, and
nothing has worked. I've ran out of ideas. Please, any
suggestions???

What doesn't work:
Update programs can't connect to the internet
AOL can't connect to the internet
IE can't connect to the internet
Will not successfully ping 192.168.0.1 or 192.168.1.0
ipconfig does not list a default gateway address
ipconfig does not list a DNS suffix

[b:7b4a71812f]What works:[/b:7b4a71812f]
The network -- all computers that can typically be accessed by this
computer can be accessed, and can access this computer
Other computers on the network can access the internet
All hardware seems to be working correctly
Will successfully ping IP address of computer (169.254.?.?)
Will successfully ping 127.0.0.1

[b:7b4a71812f]What I've tried:[/b:7b4a71812f]
Ran Spykiller
Ran Ad-Aware SE Personal (latest definitions)
Ran Norton Anti-virus 2002 (latest definitions)
Did a System Restore to 3-2-06 (when internet worked)
Unplugged/replugged power to switch
Switched NIC with known working NIC
Put NIC in known working PCI slot
Plugged PC into known working outlet/cable
Computer has been rebooted multiple times throughout all this
(obviously)

[b:7b4a71812f]Description of network[/b:7b4a71812f]
Cable broadband (I believe)
All of the computers (9) are plugged into a Linksys 16-port switch
(sorry, no model #). I have no idea what the switch is plugged into.
There is a D-link wireless router (sorry, no model #) plugged into
the switch, which works fine.

[b:7b4a71812f]The OS(s) used[/b:7b4a71812f]
The computer with the problems is running XP PRO SP2
Five other computers are running the same
One computer is running XP PRO SP1
Two computers are running Windows 98 (1 SE, 1 Regular (I believe))
(One of these lost internet connectivity last week, not sure if this
is related)

Please, any ideas would be appreciated.

An IP address of 169.x.x.x means it can't get a real IP address for some
reason. Do an IP config on a machine that can connect and take a look at
the IP address and gateway. I'd put a static address onto this computer
in the same subnet range and use the same default gateway and DNS
settings the others have and see if it works then. If it does then it
could be just a case of rebooting the router, sometimes these get in a
mess and stop giving out IP addresses to clients.
simon

 

[socav]

Thanks for the tip

Update: This morning, no computer could access the internet o
network. One of the employees called the company/guy who set up th
network, and apparently there's another router somewhere (good t
know!!!). They reset the router and all the computers worked fine.
We still have yet to see if the problem computer is working, bu
things are looking good