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DNS and DHCP have stopped working on client

Ok, time for a challenge!

I have had 2 PCs over the weekend that have come up with the same issue (other 10 clients and 4 servers working a treat).

We have a DC which is also running as our DNS and DHCP server.

2 machines over this weekend wouldnt get an IP address from the DHCP server.  I have checked that the DHCP server has available leases and removed any old records that are not used any more.  I checked that other machines would release and renew their IPs (firstly removing the entry in the DHCP server), this works fine.  I changed the cable on both machines to no joy.  The machines are connected to working hubs that I have other machines on - have used other ports on the hub to make sure this is ok.

As a result, i tried giving the machines static IP addresses and static DNS entries.  The machines can ping anything via IP address, even address on the internet all ok.  BUT they will not ping by name.  I have double checked the settings, compaired to other machines etc.  All other machines on network are resolving fine.

At this point i started to shooting in the dark.... checked my host file for rouge entries, ran hijackthis for random stuff, ran a full virus scan with 4 day old definitions, downloaded the latest drives from intel, i even installed a NEW network card and ended up with the same problem.  Then as a last resort i ran the windows repair with no joy.

I am pretty sure this is just a client problem and my DNS and DHCP server are working fine.

Any ideas?

Cheers

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sarahclements
Asked:
sarahclements
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1 Solution
 
MshineCommented:
Did you try reinstalling TCP/IP ???
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sarahclementsAuthor Commented:
Ummm..... this might be astupid question, but how do i uninstall TCP IP, the option inside network settings is disabled!
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Jay_Jay70Commented:
netsh int ip reset c:\reset.txt

should at least show you if its a corruption
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sarahclementsAuthor Commented:
well i have tried this.  still at the same point. really am stuck on this one.

I have made sure that this is only a client problem.  we have setup the network to be 1 server 1 client 1 hub.  still the same.  but bringing in a pc form my misses house, it gets an ip and get resolve.

any ideas will be much appeciated.
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Jay_Jay70Commented:
DHCP client service running on the clients? any errors in the logs?
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sarahclementsAuthor Commented:
The service is running, but where are the log files, i cant see anything in system32\logfiles :|
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Jay_Jay70Commented:
meaning the event logs themselves under comp management
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sarahclementsAuthor Commented:
nope.  only the usual bits and bobs you would expect if there was not network connection.... cant find DC etc.  The only DHCP log is saying it is giving it a APIPA which i would expect because it cant see the DHCP server
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Jay_Jay70Commented:
very odd, firewall isnt on is it?
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camacho_marcoCommented:
Try and reinstall your NIC drivers.

Cheers
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sarahclementsAuthor Commented:
tried tried and tried :(

we have just setup a new server with just DHCP on it.  Connected the server and PC into a stand alone hub, no joy.  Is there a new virus out or something?
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camacho_marcoCommented:
With a static ip rejoin the PC to the domain with a new name. Before it restart enable DHCP and see how it goes.


Cheers
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MshineCommented:
[quote]Ummm..... this might be astupid question, but how do i uninstall TCP IP, the option inside network settings is disabled![/quote]

You can remove and install TCP/IP from -> Add/Remove Programs

Once you start up add remove programs, look on the left had side.. You will see Add Remove Window
Components..

It is one of the quick ans easy things you can attempt along the way. Once reinstall, I believe DHCP is
on by default..
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sarahclementsAuthor Commented:
found there issue here.

Basically we dial into many of our customers and they have different types of VPNs ranging from Juniper to Nettllia to Cisco etc.  We have to uninstall all of the different Juniper ones (different one for each site :|) to get the network back.

Yikes!
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camacho_marcoCommented:
Glad to hear that you have your PC up and running

Cheers
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Computer101Commented:
PAQed with points refunded (500)

Computer101
EE Admin
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