Tip & How-To about Computers & Internet

Why can't you connect to the Internet?

First check your TCP/IP address - see my earlier tip on checking you are connected to a network. For most recent systems, (not Linux) open a command prompt window (type "cmd" in the RUN window from the start menu) and type ipconfig /all
you should see your network adapter name and IP address, a subnet mask (don't worry) and a default gateway, also a DNS server IP address. If ANY of these are missing, that's your problem, try repairing or resetting the network adapter. WRITE THEM DOWN. You may have more than one adapter, you need to identify which one is used for the Internet connection.
If they are all there, from the SAME window type "ping" followed by the IP address of your default gateway. If this fails, you have no connection to your internet router, find out why!
If this succeeds, type "ping" again, followed by the IP address of your DNS server. If this fails, type "tracert" and then the IP address of your DNS server. The FIRST address that will be reported is your default gateway; followed by your ISP address; if the only address you see is your default gateway, the link to your ISP  is down, give them  a call. If it succeeds, from the same window type "nslookup"
You will see a chevron prompt, type in the name of the site you want to go to, e.g google.com.
You should then see a reply from your DNS server, and an IP address for your required server. If not, then either your DNS server settings are wrong OR the server does not exist. It will be obvious which it is from the reply you receive. If the DNS settings are wrong, you can change them from the Control Panel, Network, Network adapter, Properties, TCP/IP v4 properties menu; try setting DNS server to 8.8.8.8 or 8.8.4.4 and try again.

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problems big problems


Verify that TCP/IP (or other appropriate protocol) is properly installed.

  1. 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.
  2. 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.
  3. If TCP/IP is not installed, click Install, click Protocol, and then click TCP/IP.
  4. 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.

  1. Click Startwindows%20start%20button.png, select All Programs, select Accessories, and then click Command Prompt.
  2. Type the command, ipconfig. This will list the IP address for the local machine.
  3. 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.
  4. 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)
  5. 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.
  6. 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 Startwindows%20start%20button.png, 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.

Mar 10, 2014 | Lenovo ThinkPad R60 with Wireless Wide...

1 Answer

My Zonet ZSR4134WE Wireless-N router doesn't connect to live. I've checked the MTU setting and everything. It works perfectly, until it gets to the "Xbox Live" part of the test, then it fails. Please help.


you need to open the ports on your router for xbox ports are TCP 88 UDP 88 UDP 3074 TCP 3074 UDP 53 TCP 53
first connect the xbox to the network and get the ip address (like 192.168.x.x) and then use the computer and login to router setup page and under firewall open these ports for the ip address of xbox . If you find a DMZ there , then enable it for XBOX ip address and reboot the router. ** imp: try to make a static ip address on xbox so when you restart the xbox teh ip address should not change -
to check what is the ip address provided from you router :- go command prompt (start ->run- > type cmd and hit enter) a black screen(command) type ipconfig you will find ip address of computer , so you can set the ip address of xbox like that -but just make the last number different (like ip address on computer 192.168.2.5 then make ip address of xbox to 192.168.2.6) perform this will help .. its all about the ports but be sure with ip address

Oct 01, 2010 | Zonet ZSR4134WE Wireless Router

1 Answer

why does the facebook could not be open?


Hi,

This problem can occur if there is a mismatch between the configured IP addresses in the Advanced IP Addressing dialog box and those listed in the Server Properties dialog box for the DNS server. This problem can also occur if the TCP/IP protocol is not bound to the network adapter.

User Action:

Verify that the TCP/IP addresses configured in the Advanced IP Addressing dialog box match those configured in the Server Properties dialog box in DNS Manager: 1. Open Control Panel, and double-click Network. 2. Click the Protocols tab, and click TCP/IP Protocol in the Network Protocols list. 3. Click Properties, and click Advanced. Match the IP addresses to those displayed on the Interfaces tab of the Server Properties dialog box in DNS Manager: 1. In DNS Manager, right-click the DNS server name, then click Properties. 2. Click the Interfaces tab, and compare the IP addresses with those from the Advanced IP Addressing dialog box. 3. Repeat steps 1 and 2 for all DNS servers configured in DNS Manager. If there are no IP addresses configured in the Advanced IP Addressing or on the Interfaces tab of the Server Properties dialog box, enter the IP address of your network adapter. Use the ipconfig -all command at the command prompt to obtain your IP address. Check the binding of the TCP/IP protocol to the network adapter: 1. Open Control Panel, and double-click Network. 2. Click the Bindings tab. 3. Verify that the bindings for all protocols to network adapters are enabled, and that no broken connections exist in the stack.


Please post your feedback and Vote if the problem resolved as per your satisfaction.

Sep 25, 2010 | Computers & Internet

1 Answer

Lost wireless connection. Diagnosis said network connection o.k but cable not connected to network adapter for local area connections. cheked and all cables connected even changed blue line ethernet connection cable. D-Link Model WBR1310


Check if the wireless works by directly connecting to the Lan port and the system. If it works, you may have to check for the Wireless Home Setup. Check if there are changes made to the Freequencies. 802.3 g usually gives max range. In case you are working at a distance which the signal wouldnt cover, the system can show network not detected. Also try to work on a Manual Address mode than DHCP and find if the network is getting detected. Check if the WNC is enabled and if working on DHCP, try do a tcp ip reset using the command from the command prompt... by using the command ipconfig /release.
and then ipconfig /renew
if the ip is renewed successfully, the wireless router is allocating the new tcp ip address and your network should work. Good luck.

Feb 13, 2010 | D-Link 802.11g Wireless Router WBR-1310...

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