Wireless Networking problems

Preliminary steps you can try –
– MAKE SURE your laptop’s wireless is turned on – normally there will be a physical switch or a key shortcut to “turn on the radio”
– Make sure your router is turned on and working properly
– Connect to the internet on the router
– Do a loopback ping test: open the command prompt (start menu > run > “cmd”) and type “ping localhost” to make sure you get replies

1) Make sure that you are connected to the correct network (I guess, “SHALOM”) and that you are authenticated. You can check this in Intel (R) PROset in the system tray. If not, check that your wireless is turned on and that your wireless connection is enabled (control panel > network connections). If not you will have to re-add the network.

2) If you are connected to the network, it should show the connected icon in the system tray. Right click it, press status, go to details, and check that you have been assigned an IP, subnet and default gateway. IP should be something like 192.168.x.x, the subnet should be 255.255.255.0 and the default gateway should be something like 192.168.x.x. . Make sure that it shows “Assigned by DHCP”. If it shows “manually configured” then go to control panel > network connections > rightclick the wireless connection > properties > TCP/IP > advanced, and select “automatic configuration”.

3) If you have a connection and the IP/subnet/gateway has been assigned by DHCP but still unable to connect, then open the command prompt (start menu > run > “cmd”) and type at the prompt “ping 192.168.x.x” where “192.168.x.x” is the gateway IP address. If you don’t get replies, that means you are not properly connected to the network and you will have to make sure steps 1) and 2) have been successful.

4) If you managed to ping the gateway IP address but you are still unable to connect to the internet. At the command prompt, type “nslookup www.google.com” and you should get a result like this (the “server” and “address” may differ) –

C:\>nslookup www.google.com
Server: DD-WRT
Address: 10.0.0.2

Non-authoritative answer:
Name: www.l.google.com
Addresses: 66.102.7.99, 66.102.7.104, 66.102.7.147
Aliases: www.google.com

If that is unsuccessful, go through the previous steps again. (This step requires you to be connected to the internet)

5) If you managed to succeed with the “nslookup” command, yet you are still unable to access the internet, check your proxy settings. Go to control panel > Internet Options > Connections > LAN settings. Under proxy server, make sure that “Use a proxy server… …” is UNTICKED. Under Firefox, Tools > Options > Connection Settings – make sure that no proxy servers are enabled.

Unguided advice :

– If your laptop is connected to the network, login to the router to check whether it is recognised as a DHCP client
– Connect it via network cable to see whether it works
– See whether other computers on the network are able to detect/resolve/ping the laptop

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