Wireless card unable to connect to network

Not all wireless receiver drivers for Windws XP support later encryption protocols, such as WPA2. Windows XP is no longer a supported platform, so you will likely need to upgrade to a later operating system.
You may also try finding later Windows XP drivers to support your wireless device, but it is unlikely that they will also provide the latest encryption.

Have you got two wireless icons down on the right by the clock. As it may be using the belkin wireless manager to control the device rather than the windows version.

Try this: I found it after doing some searching on the web.

Wireless card stops working after upgrading to Windows Vista
After upgrading to Windows Vista everything works fine apart the Marvell Wireless card, when you press the button nothing happens.
There seems to be three different ways of solving this problem (there is a fourth - don't install Vista) and I've listed them below, hopefully at least one should work for you.
The first solution is to press the wireless button while Windows Vista is loading, you have to be quick though as it only works if you press the button between the loading scrolling lines logo (after the post screen) and before the windows logo appears.
The second is to go into Device Manager, select the Marvell Wireless card and then go to Properties>Advanced>Default Adhoc Mode. Here change the Default Adhoc mode to B or G. When you confirm the change the wireless connection should become active, if it doesn't then press the wireless button and try changing the setting again.
The third method is to create a desktop shortcut to the wireless adapter. Go to [Network and Sharing Centre]>[Manage Network Connections] and then right click the wirless connection and choose Create Shortcut. You can then switch on the wireless at any time, just point at the shortcut then right click and chose Disable. Once its disabled right click on the shortcut again and choose Enable. It should then connect within 20-30 seconds.

Support site: http://www.uktsupport.co.uk/advent/laptop/7088.htm

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If that works then the modem is working.
Now connect the computer to the router and the modem to the router.
You will need to open the set up page of the router to check the settings of the router.
You can set up the router without the CD also.
It is very easy.
Click Here for step by step instructions about how to set up the router

OR

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If it is XP then in the bottom right hand corner you will find Wireless network connection ( looks like 1 computer monitor). Use that icon to connect to the wireless network.
If it is windows Vista, then in the bottom right hand corner you will find 2 computer monitor icon. Use that icon to connect to the wireless network.
If it is Windows 98/ME/2000 then use the adapter utility to connect to the wireless network.
For MAC you will see the AIRPORT icon at the top.

Click Here for step by step instructions on how to connect to the wireless network and troubleshooting steps

Try this first before you give up...any usb adapter will work by the way....just keep the windows wirless utility as your main wireless software.

Windows WiFi Fix,

Windows Zero Wireless Configuration is one of the best programs to run a WiFi in Windows XP or Vista. Most of the other software packages that come with the different adapters have been poor at best in keeping a connection through Windows. Here is the best guide to get you back up and connected.

Windows XP:

Click Start
Right click on My Computer
When a window pops up click on properties
Click on the Hardware tab
Click Device Manager
Click the [+] next to Network Adapters
Find your wireless card and right click on it.
Click Disable
Windows may warn you that disabling the device may make it stop functioning.
Continue disabling the device.
Wait 30 seconds or so.
Right click on your wireless again and click Enable.
Exit the device manager.
Reconnect to your router.
You should now be able to connect to the internet.

Windows Vista:

Click Start Logo
Right Click Computer
Click Device Manager
Windows will ask you about opening Device Manager

well!! I have an answer for you.your comp is loosing the IP address. goto start - programmes - accessories - dos prompt. type ipconfig.you`ll get ip address,subnet mask,default gateway.copy it. goto network and sharing center in vista and network connection under control panel in XP,IN Vista,click on view status,goto properties and double click on internet protocol(tcp/ip) or IPv4In XP,right click wireless network connection and goto properties and double click on internet protocol(tcp/ip).type in the IP address,subnet mask,default gateway.in DNS server address type the default gateway in primary DNS and in secondary 4.2.2.2. your connection won`t drop after this.

may be your router needs a firmware upgrade.
check the router's website.

and make sure the router and the wireless card are both using the same 802.11 protocol

Hi There,

I am inclined to ask you if your wirless has been enabled within the bios?

Please let me know and we can take from there...

I look forward in hearing from soon.

Regards,

Philip

0) You must log as Administrator to enable your device

1) Check if the adapter has been installed

(My computer-->>Right click --Properties--->>Hardware--->>Device Manager---->>Network

2) You have to set the wireless connection

To set one do this:

Connecting XP
Click your Start Button
Select and click Control Panel
Select Network Connections
Select Wireless Network Connections
Right click
Select View Available Wireless Networks
5. Highlight the network you want to connect to
Click Advanced
6. Select the wireless network tab
7. Highlight the network in the available networks window
9. Click configure
9. IN the Properties Window
Double check the SSID (network name)
Enter the WEP KEY provided to you by the office
Click OK

if you are using the dell wireless utility to manage your card, then disable it, and manage your wireless adapter through the windows network connections. that way the wpa issue will be solved by windows xp wpa. i had a similar problem with my inspiron 1525 (dell wireless 1395)