I have a wireless laptop lab, and the laptops are now unable to connect to the Internet; when I diagnose the problem, the error message is DNS server not responding...I have gone into my Dlink 615, and the appropriate DNS settings are there.....can't figure it out...help!

When trying to connect to the Internet from your laptop computer, you may receive an error concerning improper DNS settings. DNS stands for Domain Name System, which handles how computers connect to IP addresses and websites. In order to fix a DNS problem, you need to modify your network adapter's settings so that it connects to the correct DNS servers automatically.

To check DNS query visit the site WhoisXY.com .

Here are the simple steps to take.
error 105 Unable to resolve the server DNS address

There might be a problem w/ your IP address or DNS server, try to open LOCAL AREA NETWORK CONNECTION STATUS in your laptop running xp, click support/details, Then copy the DNS server address and alternative dns server address.

open your vista go to Network Connection/LAN properties, then double click Internet Protocol (TCP/IP, mark obtain ip address automatically, then the lower side Mark USE THE FOLLOWING SEVER ADDRESS then paste the dns server address which you copied from xp laptop. same w/ alternate dns server, and then click OK. DONE.
JUST TRY IF ITS HELP FULL.

Have you try to check the IP ADDRESS of your laptop? Your laptop must have a unique IP address or it must have the same default gateway with your ISP provider or the router. see example below,

IP ADDRESS: 192.168.1.15
SUBNET MASK: 255.255.255.0
DEFAULT GATEWAY: 192.168.1.1

preffered DNS server: 192.168.1.1

note: 192.168.1.1 is the IP ADDRESS of your internet or ROUTER that is given from your ISP that they've configured.

try to check the other laptops that was able to connect, you can follow it.

Connecting PS3 to a network I have LinkSys wireless router which is working perfectly for other devices (like laptop, Xbox360, TiVO). My wireless network is configured to NOT broadcast the SID and with a WEP key. After entering this manually in the network setup on my PS3, I was able to obtain an ip address from my router, I was able to open the configureation page on my router, but connecting to the internet would fail with some kind of DNS error. The way this was resolved for me, was to enter the DNS server addresses manually in the PS3 network settings AND use tetertiary DNS server from my ISP as either the primary or the secondary DNS server. ..btw, this also fixed the similar problem I had with my PSP.. Thanks!

go to network setting then assist me , select default location after completing it . go to advance setting then check dns server and add the server ip adress in it save the settings check it is working. rate if helpfull

1- Try setting your own DNS server settings, right click on your network connection > properties > TCPIP v4 > edit DNS settings ( use dyndns.com as a dns for example).
2- Try refreshing your DNS cache:
start > run > cmd > and type: ipconfig /flushdns

Hope it helps !

I'm a little confused about the status of your network adapter. Can you check to make sure your wireless network adapter(s) (wireless and physical) are set to "Obtain an IP Address Automatically" and to "Obtian DNS Automatically".

After this can you reconnect to the wireless network? Try the internet. If the internet still doesn't come up flush your temp files, close the browser and retry the internet. If it's still a no see below:

If so, can you try and do some simple "ping" diagnostics?

Open a command prompt:

1. Click on the START MENU and select RUN
2. Type in: cmd
3. Click OK
4. Type in >ping <ip address of wireless router>
Example: >ping 192.168.1.1
5. If your results are 4 "request timed out" then you have not established a wireless link yet. I would try and do a factory reset of the router and start over from scratch. A factory reset can be done by simply holding the "RESET" button on the back of the router for about 20-30 seconds.
6. If your results are 4 replies then you can run the next test.
7. Type in >ping 4.2.2.2
8. 4.2.2.2 = a public DNS server. If you get replies then your are on the internet, but it appears that name resolution is a problem. All this means is that when you try to go to www.google.com the DNS server that you should be contacted to find your way isn't able to tell you what the actual IP address is of www.google.com and so you go nowhere.
9. Provided you're set as a DHCP client (meaning your network adapter is set to "Obtain an IP address and DNS automatically" it means your wireless router (if it's the DHCP server - this is the default configuration) is giving you the wrong information for DNS.
10. I would contact your ISP for the correct DNS servers and make sure they are configured properly on the Router.
11. You can see what DNS servers you are actually getting from the Router if you run the following command from a command line: ipconfig /all

Hope this is helpfull.

Let me know if I can help any more.

MO

YOU HAVE TO TRY TO INSTALL ORIGINAL SOFTWARE , SOME
OF THAT MAY BE CHANGED BY USE - DELFO

Hi,

If the laptop is working then your router is probably working correctly. Is the desktop wired to the router or running wireless?