Internet connection/network adapter problem

You have to uninstall your WiFi Adapter driver software, and reinstall it.
It may be help.

Which type and brand of router ?

Several computer models include two specific hardware components that enable the device to connect to the Internet: an Ethernet adapter card and a wireless adapter card. These cards are also called network adapters, or network cards. If your computer suffers from an intermittent Internet connection, and your Internet service provider (ISP) doesn't detect any issues on their end, you can update the software for the network adapters to resolve the intermittent connection. If updating the adapters doesn't resolve the problem, reset the transmission control protocol/internet protocol (TCP/IP) and Winsock to restore the connection.

Click "Start." Click "Control Panel." Type "manager" into the search bar. Click "Device Manager." Expand "Network Adapters." You should have one wired adapter and one wireless adapter, if the computer has wireless support. Double-click each adapter. Write down the name of the adapter, as well as the manufacturer's name. Go to the computer or network adapter manufacturer's website if you installed the adapter to the computer yourself. If the adapter came with the computer, go to the computer manufacturer's site instead. Select the "Support," "Download" or "Drivers" page. Look up your computer or adapter model. Select your operating system. Click the "Network," "LAN" or "Internet" category. Download the latest adapters for your network devices. Click "Save" or "Save As" and save the files to your desktop. Return to Device Manager. Right-click the first device. Click "Update Driver Software." Click "Browse My Computer for Driver Software." Follow the remaining on-screen directions to reinstall the device driver. Repeat the process for the other network device. Restart the computer after reinstalling the drivers to repair the intermittent Internet issue. Reset IP Log in to Windows as an administrator. Hold down the Ctrl, Shift and Esc keys to open Windows Task Manager. Click "File." Click "New Task." Type "cmd" and press Enter to open Command Prompt. Type "netsh int IP reset c:\resetlog.txt" into the Command Prompt. Press Enter to rewrite the TCP/IP registry keys. Enter "netsh winsock reset" into the command-line prompt. Press Enter to reset the Winsock catalog and resolve the intermittent Internet problem.
How to reset Internet Protocol (TCP/IP)
http://support.microsoft.com/kb/299357

With a wireless connection, your PC can connect wirelessly to a network printer. In addition, you can set up your PC in a location where no phone line or cable connection exists. Outfitting your desktop to a wireless Internet connection is very easy. Just follow these simple steps and you'll be surfing the net wirelessly in a matter of minutes.
Find out if wireless Internet reception exists where your computer is located. If you're located very close to a W-iFi hotspot, like a coffee shop, you may be able to use this network to get wireless Internet for desktop PCs. Also, some apartment complexes and college dorms have free wireless Internet. Your neighbors may have wireless Internet too, which you can ask them if you can use. Buy a wireless network adapter for your desktop. You can obtain an adapter from most electronic stores. Be sure to get a wireless adapter with the proper strength, which depends on how far you are from the wireless hotspot. The easiest adapters to install are those that just plug into an available USB port. Set up your wireless Internet for your desktop PC according to the instructions that came with the wireless adapter. The usual procedure is to plug the wireless adapter into an available USB port. Windows will install the appropriate driver. After your PC recognizes the wireless adapter, select the "Connections" icon in the taskbar (represented by vertical bars). A list of available connections will appear. Select the desired connection. If you are prompted for a password, enter the appropriate password. Click "Connect." You are subsequently connected to a wireless network. Launch your browser and enjoy surfing the Internet wirelessly. If you are the owner of the wireless network, secure your wireless network with a password. To do so, navigate to the "Start" menu and select the "Control Panel." Then select "Network and Internet" and "Network and Sharing Center." Click "Change adapter settings" in the left pane. Double-click the icon of the appropriate wireless connection. The Wireless Network Connection status window appears. Click the "Wireless Properties" button. Select the "Security" tab and select an encryption type from the drop-down selection. Enter a password in the Network security key field. Make sure that the password matches the router settings. Press "OK" when done. Get a wireless internet router for your Internet connection if there is no wireless Internet already in your area. You can buy these online, or at electronic stores. You'll need to set up your router using the accompanying instructions and your own Internet service provider. This is best in a home with multiple computers.
You will have to open up your network connections Click start control panel network connections this may vary depending on your operating system look for local area connection if you see a red x or a yellow exclamation or question mark ! ? you will need to update or install the driver or it could be firewalled, If you are trying to connect through a modem/router you it should have come with a disk then you might have to connect the usb lead to your modem to get a connection then Click start control panel administration tools computer management device manager scroll to network adapters should see a yellow question ? exclamation mark ! or a red X right click install drivers. The driver might be on the disc supplied by your ISP internet service provider or the motherboard disc Click start type cmd press enter you will be in DOS mode type in ipconfig press enter you will see all o fyour internet connection details type in your default gateway adress into your internet search should read something like 10.0.0.138 Make sure you Ethernet/internet is enabled in bios restart your computer during the boot up process you will see on your screen a certain key to press to enter set up (BIOS) press and hold that key to enter bios using arrow keys navigate to integrated peripherals look for SiS On Chip Pci Device press enter scroll to SiS 10/100m press enter make sure its "Enabled"imake
Hope this helps.

Connect the Laptop and TV with a *CROSSOVER* ethernet cable and then enable "Internet Connection Sharing" on the Laptop's "Wireless Network Connection".

To enable "Internet Connection Sharing", open the Network Connections folder ("Start > Run" type NCPA.CPL and click OK). Right click the Wireless Network Connection, select Properties and then the Advanced tab [XP] or Sharing tab [Vista]. Tick the box "Allow other network users to connect through through this computer's internet connection.

For most laptop/notebook/netbook computers, the wireless adapter is "inside" the casing.

By "not connected", it means that your wireless-adapter *IS* physically connected to your computer, but it does *NOT* have a "logical" connection to the wireless-adapter inside the router.

Click Start
Click Control Panel
Click Network Connections
Click View Available Wireless Networks
Select the SSID corresponding to your router.
Click Connect.
Supply an ID/password/pass-phrase, to get "connected".

Go into network set up a shared Internet connection using ICS (Internet Connection Sharing) You can use Internet Connection Sharing (ICS) to share an Internet connection among two or more computers on a network. First, you need one computer, called the host computer, that is connected to the Internet and that has a separate connection to the other computers on your network. You enable ICS on the Internet connection. The other computers on your network then connect to the host computer, and from there to the Internet through the host computer's shared Internet connection.
If your computer is connected to a network, network policy settings might prevent you from completing these steps.
On the host computer (the computer whose Internet connection you plan to share):

1. Click to open Network Connections.
   
2. Right-click the connection that you want to share, and then click Properties. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
   
3. Click the Sharing tab, and then select the Allow other network users to connect through this computer’s Internet connection check box.
   

First, I would go to the control panel (start, control panel; or start, settings, control panel). Then got to Add/Remove Programs. Scroll down the list until you find what looks like netgear software and try uninstalling there.

If that does not work or you can't find it in the list, you could try inserting the install cd again. Check to see if there is an unistall option, and perform an uninstall. Or, if not, then try installing it completely, then uninstalling it via CD.

if you are using windows 2000 or later start the routing and remote access service (make sure to set it to automatic) and that should solve your problem.

Most of DSL modems are connected to PC with USB cable...
n if ur server is connected with other pc on lan .. you can use internet sharing option available in winxp.

Following are the steps to enable Internetsharing for other pcs.


How to use Internet Connection Sharing loadTOCNode(2, 'summary'); To use Internet Connection Sharing to share your Internet connection, the host computer must have one network adapter that is configured to connect to the internal network, and one network adapter or modem that is configured to connect to the Internet.

On the host computer loadTOCNode(3, 'summary'); On the host computer, follow these steps to share the Internet connection:

1. Log on to the host computer as Administrator or as Owner.
2. Click Start, and then click Control Panel.
3. Click Network and Internet Connections.
4. Click Network Connections.
5. Right-click the connection that you use to connect to the Internet. For example, if you connect to the Internet by using a modem, right-click the connection that you want under Dial-up.
6. Click Properties.
7. Click the Advanced tab.
8. Under Internet Connection Sharing, select the Allow other network users to connect through this computer's Internet connection check box.
9. If you are sharing a dial-up Internet connection, select the Establish a dial-up connection whenever a computer on my network attempts to access the Internet check box if you want to permit your computer to automatically connect to the Internet.
10. Click OK. You receive the following message: When Internet Connection Sharing is enabled, your LAN adapter will be set to use IP
    address 192.168.0.1. Your computer may lose connectivity with other computers on
    your network. If these other computers have static IP addresses, it is a good idea to set them
    to obtain their IP addresses automatically. Are you sure you want to enable Internet
    Connection Sharing?
11. Click Yes.

The connection to the Internet is shared to other computers on the local area network (LAN). The network adapter that is connected to the LAN is configured with a static IP address of 192.168.0.1 and a subnet mask of 255.255.255.0

let me know if it helps.

best regards,