Red X for Network Connection Dell 8100

In Device manager, under the network adaptor are you able to see wireless adaptor for your device. - see if it not marked as disable( Red Mark or Yellow Mark)
Also check in network connection wheather you Wireless connection is in Enable or Disable mode,

Note: Please dont forgot to rate me.

This generally indicates a lack of connectivity with your network or internet service provider's network, whether it's wired or wireless. Check to make sure you have an established connection to your internet service provider.
Knowing what operating system and your connection status would help to assist you further.

yes it can.

go to control panel >> double click on network connections >> right click on wireless network connection and click view available wireless network. then click on your network name and connect wirelessly.

Goto to Setting>Network Connections and right click on the wireless connection and choose enable.

By any chance, are you trying to use something other than Windows to manage the wireless adapter? If you are, remove it.

Now, Click on Start, right click on Network highlight properties, and click on manage network connections on the Tasks menu.
Your two options will be the icons for your LAN and Wireless Network. Is it enabled and without red or yellow marks? It could be disable, it could be not connected and you can't view wireless networks because the switch is off, or it may just nut see your unsecure network (unlikely).

If the above is clear, right click on the wireless and highlight Properties and left click so it brings up the Networking tab. Highlight IPv4 and click on Properties. Make sure the Obtain dots are ticked. That should work, since you are running unsecured.
If it already is, check the red X or if it isn't click OK and close down the box.

Now, back to where your Wireless card is showing, right click it and you have Disable, Connect/Disconnect, Status, Diagnose etc.

If you're still Disconnected but not Disabled, click on Connect/Disconnect. Does it show your wireless network?

By this time, it should. If it doesn't post back. The other possibility is that you take your computer to a wireless internet cafe, McDonalds, Panera Bread, or motel with WiFi and test it there.

Carl

This is a winsock error. You need to reformat your computer and reinstall Windows

Assuming that the wireless driver is enabled and working, if not reinstall the wireless card driver. Are all the lights on the router are on, if not power down the wireless router, wait for 30 secs and power up the wireless router. Sometimes when you boot up the wireless card doesn't get an IP address from the wireless router. If you see the wireless icon on the Task Bar with a red X against it, just right click on the icon and click on Repair. This will repair the connection and get the wireless router to issue the wireless card with a new IP address. If you don't have an icon on the Task Bar go to Control Panel - Network Connection and right click on the wireless Network connection and click on Repair.

If you're using wireless internet and should be connected, you'll have to make sure that you're in range of the wireless network and have the proper network key if it's required.
If you're not using the wireless internet and just want the notification to go away, you can double click on the icon itself, and then select 'properties' in the next window that opens. Then just remove the checkmark next to 'notifiy me with this connection has limited or no connectivity'

A hardware error usualy indicated a bad network cable or a bad network card. Have you tried using a different Cable?

Connect it directly to the modem with the ethernet cable first...Windows will configure the Dell...then the wireless should work.