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Verify that TCP/IP (or other appropriate protocol) is properly installed.
Open Control Panel and open Network Connections or Network and Sharing Center, then click Change adapter settings. The wireless card should be present as Wireless Network Connection.
Right-click the appropriate Wireless Network Connection and select Properties. In the Properties window, make sure that the Internet Protocol (TCP/IP) or Internet Protocol Version (TCP/IPv4) is installed.
If TCP/IP is not installed, click Install, click Protocol, and then click TCP/IP.
Once installed make sure that Obtain an IP address automatically, and Obtain DNS server address automatically are checked (if using DHCP). To verify this, highlight the TCP/IP protocol, and select Properties.
Note: Only use a Static IP Address if your network/Service Provider requires one.
8.Verify the TCP/IP address.
Click Start, select All Programs, select Accessories, and then click Command Prompt.
Type the command, ipconfig. This will list the IP address for the local machine.
If this returns a 169.x.x.x or 0.0.0.0 address, then type the following commands; ipconfig /release and then ipconfig /renew.
You should then receive a TCP/IP address appropriate to your network, along with a Default Gateway address.
Try to communicate with it by typing this command ping x.x.x.x where x.x.x.x is the IP address of the Default Gateway. (i.e. ping 192.168.1.1)
If this does not give a reply (see the example in step 9) or you did not receive a TCP/IP address, go to the next step.
If you are connecting wirelessly, but receiving an IP address, your wireless router/Access Point might need to be reset (unplug power for a minute, then plug back in), or maybe defective. Please consult your wireless router/Access Point manufacturer for further assistance.
9. Ping the loopback address.
Click Start, select All Programs, select Accessories, and then click Command Prompt.
Type the command, ping 127.0.0.1. This will send a message to the internal network stack on the machine. You should see a response like this:
Pinging 127.0.0.1 with 32 bytes of data:
Reply from 127.0.0.1: bytes=32 time<10ms TTL=128
Reply from 127.0.0.1: bytes=32 time<10ms TTL=128
Reply from 127.0.0.1: bytes=32 time<10ms TTL=128
Reply from 127.0.0.1: bytes=32 time<10ms TTL=128
Ping statistics for 127.0.0.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milliseconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
If instead, you receive errors, then there maybe system corruption or malware installed preventing networking from functioning properly.
10. Verify that the hardware is functioning using diagnostics.
Check the web site, http://support.lenovo.com. Choose Download Drivers and Software and enter your particular system. Then under Diagnostic choose the download for your system. If diagnostics fail, please contact warranty support for resolution.
Run diagnostics for third party wireless card.
Note: If using another manufacturer's product, then consult it's documentation on how to run the diagnostics for the wireless card.
Hi mate, you might want to change your DNS server to google DNS or openDNS. They both are fast, responsive and robust. Do you know how to do it?
1. Open you web router management
2. Under Network > WAN tab, make sure you enable this option and change the primary and secondary DNS server to the ones below, they are google DNS. Save it and reboot. Hope this helps
To connect a laptop to a wireless network for accessing internet....you have two ways:-
1. DHCP (Dynamic Host Control Protocol)
2. Manual entry of settings in wireless adapter properties.
1.DHCP:-
In DHCP method you dont have to enter any settings on the wireless adapter. The wireless network which you are connecting will automatically assign an IP Address to you. But to use DHCP it must be supported by your wireless network router settings.
2. Manual entry of settings in wireless adapter properties.
This method is mostly used over wireless Connection in small networks connecting 2-200 computers. In this method you have to obtain the following information from your connection provider.
* IP address (Its format is "xxx.xxx.xxx.xxx")
* Default gateway address (very important)
* Primary and secondary DNS (If not given then you can use "8.8.8.8" as primary DNS and "8.8.4.4" as Secondary DNS...thats free DNS service from google and its very fast)
* Subnet Mask (not needed mostly...automatically generated)
To enter these settings you have to rightclick the Wireless Adapter>> and select properties>>Then double click the Internet Protocol version 4(TCP/IPv4) and enter these settings. In many cases when you are using proxy server then you have yo use proxy settings also in your browser..
Hope this will help 4 sure....Cheers..:)
To connect a laptop to a wireless network for accessing internet....you have two ways:-
DHCP (Dynamic Host Control Protocol)
Manual entry of settings in wireless adapter properties.
1.DHCP:-
In DHCP method you dont have to enter any settings on the wireless
adapter. The wireless network which you are connecting will
automatically assign an IP Address to you. But to use DHCP it must be supported by your wireless network.
2. Manual entry of settings in wireless adapter properties.
This method is mostly used over wireless Connection in small networks
connecting 2-200 computers. In this method you have to obtain the
following information from your connection provider.
IP address (Its format is "xxx.xxx.xxx.xxx")
Default gateway address (very important)
Primary and secondary DNS (If not given then you can use "8.8.8.8" as primary DNS and "8.8.4.4" as Secondary DNS...thats free DNS service from google and its very fast)
To enter these settings you have to rightclick the Wireless Adapter>> and select properties>>Then double click the Internet Protocol version 4(TCP/IPv4)
and enter these settings. In many cases when you are using proxy server
then you have yo use proxy settings also in your browser.. Hope this will help....Cheers..:)
On your computer, Click on Start and then RUN and type CMD... on the black screen/DOS prompt type there FlushDNS and press enter, this will clear out the DNS and should work
Some ISP require that you use there DNS servers and automatically assign these settings. Here is a great article utilizing OPENDNS Servers that will allow you to troubleshoot your problem. I have found that by following their instructions it has saved me alot of slow web surfing.
Yes, XP Pro SP2 tends to give a network or browsing issue. Check proxy server settings as well or Apply the DNS staticly to the Wireless Network Adapter's TCP/IP properties and see what happens???
Sounds like a dns problem.<br><br>press "widows key (Has a flag printed on it) r" then type "cmd" then type "ping www.yahoo.com"<br><br> it should give you something like this<br><br>Pinging www.yahoo-ht3.akadns.net [209.191.93.52] with 32 bytes of data:<br><br>
Reply from 209.191.93.52: bytes=32 time=51ms TTL=49
<br>Reply from 209.191.93.52: bytes=32 time=53ms TTL=49
<br>Reply from 209.191.93.52: bytes=32 time=58ms TTL=49
<br>Reply from 209.191.93.52: bytes=32 time=51ms TTL=49
<br><br>
Ping statistics for 209.191.93.52:<br>
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),<br>
Approximate round trip times in milli-seconds:<br>
Minimum = 51ms, Maximum = 58ms, Average = 53ms<br>
<br><br> you need the 209.191.93.52 number. (May be different on yours.) Now take that number and put it whrere you usually type www.yahoo.com in firefox. If it works its a dns issue and it is usually the service providers end. If it doesnt work then reinstall firefox.
i have tata internet connection. i inserted two ethernet cards in server system. when i was going to use ping command for internet connection, "DNS server host not reatchable" message coming. ping command working & and also browsing after one of the ethernet card disable.
i want to connect the systems on LAN for internet from server. please suggest for this problem.
, select All Programs, select Accessories, and then click Command Prompt. 
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