No networks available

Ok,here's the solution,I have my lap top about 100 feet away from my router,have a man cave,I have it plugged in always and when the wind is blowing,my signal will get lost and I get the same reading as you do,but it picks right back up,it's the signal,my vizio,smart tv is connected by wifi and I loose my signal there too,Here's a video to watch,enjoy.http://www.youtube.com/watch?v=Lf1UgEJq8NY

If you are connecting to someone's wireless network without theie permission then they most likely decided to secure their wireless network.
You can connect to a free wireless network at locations such as the airport, Macdonalds or Starbucks etc. These are ususllly unsecured wireless networks.

To connectyour computer to a wireless router, you click the Refresh networklist, then Choose your wireless network and then click Connectto your secured Wireless Network, it will asks for a Network Keybefore allowing you to connect into your wireless network. This NetworkKey is either the WEP, or WPA or WPA2 Encryption key that is used toconfigure the Wireless Router. The Passphrase is an alternate way tosetup the Encryption key.
When you are requested for a Network Key, you can just enter the Passphrasethat was used to configure the Encryption key in the wireless router.http://www.fixya.com/support/r5270415-network_password_network_addressFor information on securing your wireless network,configuring the wireless router and configuring the wireless card in thelaptop/computer, please click on this link and follow my instructions :-http://www.fixya.com/support/r3559128-wireless_router_security

If you get a 'Limited connectivity" on you wirelessconnection on your laptop, it means that the wireless card on your laptopprobably did not get an IP address from the wireless router.
To fix this problem, right click on the wireless icon on the Task bar and thenclick Repair.
This will force the wireless router to issue a IP address to the wireless cardon the laptop.

It seems you are having issues with the router. As you've said your PC can detect other wireless networks except for wireless network that you're supposed to connect into. Try contacting the technical support team of the manufacturer of your router so that they can check it out, it might be a defective router.

The Linksys Wireless router is fine, but your latop is not configured for DHCP (Dynamic Host Configuration Protocol). The computer is connected to the router at layer 2, whereas HTTP (Hypertext Transfer Protocol), sits
atop the TCP/IP (Transmission Control Protocol/Internet Protocol) layer, and seems to be trying to
query the ISP's (Internet Service Provider) network for a nameserver (via DNS (Dynamic Name Service) protocol) that doesn't exist on the ISP's network. Configuring the laptop for DHCP and specifying no nameserver will fix this (the ISP's network will dynamically assign a DNS).

Its also possible (though a remote possibility) that your Linksys wifi router may be configured to disallow TCP/IP virtual circuits to/from your computer's IP address - but this is a really advanced
capability of your Linksys wifi router - few know this capability even exists.

Connecting multiple wifi devices to the Linksys router should be no problem, just configure them all to interact with the router using DHCP.

Use an Ethernet cable to connect from one of the LAN ports on the router to the network port on your Windows computer.
Click Start
Click Run
Type CMD
Press Enter
Type IPCONFIG
Press Enter
Look for output like: Default Gateway ... 192.168.123.456
Start Internet Explorer
Type http://192.168.123.456
Press Enter
Login to your router's web-interface
Click to run the Wireless Networking Setup Wizard
Choose 'WPA' or 'WPA2' encryption
Pick a SSID ("network name" for your wireless network)
Pick a password for your network
Click OK to restart the router
Connect via the new SSID/password

> says "limited access"

Ah, it _IS_ your wireless setup that is the problem,
because your computer has detected that the wireless adapter has _NOT_ been able to "connect" to any wireless access-point, such as your own wireless router.

If it is "new", take it back to where you bought it, and ask them to give you a demonstration on how to "view available wireless networks", and how to select a wireless network, and how to "connect" to the selected network. Take your wireless router, too, and its power-supply. So, they can setup the router so that it will work when you bring it back home.

Limited or No Connectivity on Windows XP

Limited or no connectivity indicates that the computer cannot acquire a valid IP address. This is due to incorrect network key you have entered. We need to check the correct WEP key in your router's setup page. Here are the troubleshooting steps we recommend you try:

Note: You need to use a computer hardwired to the router to check the wireless settings.

1. Please open any web browser like Internet Explorer or Netscape Navigator.
2. Connect to the router by typing http://routerlogin.com/basicsetting.htm or http://192.168.1.1 in the address field. Please click Enter or Return key.
3. A window will prompt for a user name and password. The default username is "admin" and the default password is "password".

Note: If it does not take password as the password, you might have changed it when you have run the NETGEAR Setup CD so please try other passwords. If you cannot remember the password, you need to reset the router and run the Setup CD to reconfigure it.

4. Click on Wireless Settings under Setup page.
5. Take note of the SSID.
6. Scroll down, look for the Security Options and check whether WEP (Wired Equivalent Privacy) or WPA (Wi-fi Protected Access) is selected.
7. If its WEP is enabled, copy the value of the selected Key number. If WPA is selected, take note of the Passphrase.
8. To configure the computer with wireless adapter, please consider the following:

Configuring the NETGEAR adapter and Saving the Profile

a. Open the NETGEAR Smart Wireless Settings Utility icon located at the lower right portion of your computer screen. It will then open the Settings tab.
b. Change the Network Name SSID to match the one on your router.

Tip: As an alternative to typing in the SSID, you can use the Network tab to view the available wireless networks. Double click on the desired network.

c. Click the Apply button to activate the connection.
d. Enter a name for your profile (e.g. NETGEAR to Home Network) and click the Save Profile button to store the current settings.

Note: The above procedure applies only if you are trying to connect to a wireless network with no wireless security.

If the computer is using Windows built-in wireless program to manage the wireless adapter, please follow the steps below:

For Windows XP Service Pack 1

a. Please right click on the Wireless icon on the right lower end portion of your computer. Then click on to View Available Wireless Networks.
b. Click on the Advanced tab.
c. Please delete all the preferred networks then click on OK.
d. Right click on the Wireless icon again and click on View Available Wireless Network.
e. Please select your network and click on Connect. If you have Wired Equivalent Privacy (WEP) or Wi-fi Protected Access (WPA) enabled on the router, it will ask you for the network key. The network key will be the Key or Passphrase you have copied from the router setup (refer to step 7). Please type in the Network Key and then confirm it.
f. Make sure not to enable IEEE and then click on Connect.

For Windows XP Service Pack 2:

a. Please right click on the Wireless icon on the right lower end portion of your computer. Then click on to View Available Wireless Networks.
2. Click on the Change Advanced Settings.
3. Click on the Wireless Networks tab remove all the preferred networks then click on OK.
4. Right click on the Wireless icon then click on View Available Wireless Network.
5. Select your network and click on Connect. If you have Wired Equivalent Privacy (WEP) or Wi-fi Protected Access (WPA) enabled on the router, it will ask you for the network key. The network key will be the Key or Passphrase you have copied from the router setup (refer to step 7). Type in the network key and confirm it. Then click on Connect.

Note: You may use the wireless utility of your wireless adapter in connecting to the wireless network but you need to clear "Use windows to configure my wireless networks" on the Wireless Networks tab. Please ask assistance from the wireless adapter vendor for configuration if using a proprietary wireless utility (non-NETGEAR wireless adapters).

Click on Start - Control Panel - then Network Connections - then right click on your Wireless Network connection - click on Properties.
Then in "This connection uses the following items, scroll down to Internet Protocol (TCP/IP) and click on Properties. Under the General Tab make sure Obtain an IP address automatically and Obtain DNS server address automatically are selected. Click OK.

If you do not see TCP/IP in the Wireless Network Connection then click on the install button and then install the TCP/IP driver.

IF TCP/IP is OK then before you do the following, turn off or disconnect the power to your wireless router, wait for 1 minute before connecting the power again. Wait till the LED lights indicate that it is on line again and the wireless is on then :-

Click on Start - Control Panel - then Network Connections - then right click on your Wireless Network connection - click on View Available Wireless Networks
Do you see your wireless network (ie. your wireless router)?
If so click on your wireless router and then click Connect.

You can also click on Repair to try to reconnect to your wireless router.
Let me know if it works.

The list of wireless routers that are available in Windows is very limited and the signal strength of any router that is detected is weak. This can occur when the Lite-On USB Wireless 802.11 b/g hardware and Windows are not able to fully synchronize the signal strength data. Figure 1: Example of detected wireless devices when the antenna cable wire is connected to secondary port Figure 2: Example of detected wireless devices in the same environment when the antenna cable wire is connected to primary port To correct this error , download and install Lite-On USB Wireless LAN Driver Update (sp35177) (in English) from the HP Web site. This update should only be applied if your PC has the Lit-On USB Wireless LAN adapter and is exhibiting the symptom. As a work-around, you can connect the wire that runs from the wireless antenna port to the primary port on the cord as follows: CAUTION: This product contains components that can be damaged by electrostatic discharge (ESD). To reduce the chance of ESD damage, work over a non-carpeted floor, use a static dissipative work surface (like a conductive foam pad), and wear an ESD wrist strap connected to a grounded surface.

1. Open the side panel.
2. Find the wireless networking board by following the antenna wire connected to the wireless networking antenna port on the back of the computer. Figure 3: Wireless networking hardware 1 - Wireless network board 2 - Antenna wire 3 - Wireless networking antenna port
3. Very carefully, disconnect the small wire from the board by gently pulling the end of the wire away from the board.
4. Connect the wire to the other available port on the board. Figure 4: Available port
5. Replace the side panel, connect the power cord, turn on the computer, and use the computer again to verify that wireless signal strengths have improved.