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Purchase a wireless router that fits your needs and price range.
Follow the router's manual to set up the router and its Internet connection, which will probably require connecting a wired client to the router. Once the wireless router is set up, the wired connection is no longer necessary. However, it's best to leave the wired client connected if it's a separate computer from that on which you're going to set up WiFi. If something goes wrong, you can access the administration interface again.
Gather information from the setup process. In order to set up the wireless client, you will need to know the service set identifier (SSID), the Wireless Encryption Protocol (WEP) key and the channel and mode.
Boot up the laptop and plug in the WiFi card. This will not be necessary if your laptop has an integrated WiFi card.
Install any drivers needed to use the WiFi card. Insert the disc that came with the WiFi card and follow the on-screen installation process. Most discs will trigger a new hardware wizard that makes installation extremely simple.
Double-click on the "WiFi Connection" icon. It can be found in the system tray at the bottom of the laptop screen.
Click on "Properties."
Select the "Wireless Networks" tab.
Use the "Add" button at the bottom of the dialog if your WiFi network isn't in the "Avable Networks" section.
Click on "Configure" when you see your network's SSID in the "Available Networks."
Enter your network's SSID and WEP key.
Click on "Start," then choose "Connect To" and "Wireless Network Connection." Your computer should now be able to access the WiFi network. If the WiFi network is connected to the Internet, it should also be able to connect to the Internet.
Connect your router to computer with ethernet cable then you can access it with following default link. http://192.168.1.1 or http://192.168.0.1 or http://192.168.15.1 or http://192.168.2.1 If you are not able to access it with above ip then check your computers ip address gateway ip is your router ip try with it. Then it ask for user name and password. Type user as "admin" and password as "admin" or "password" or blank. Then you can see configuration page of router. Then configure wan settings and lan settings enable wireless if you want to use wifi Then save settings and restart router Then connect cable from internet service provider to WAN port of router and connect ethenet lan cable from computer to lan port of router. . Let me know if you need further assistance. Thanks for using FixYa.
Go to the first pc that is already connected. Right click your connection and note the status/advanced information, find the gateway IP address. Open a web browser and login to your netgear router. NetGear default is admin and password.
Now go to the wireless setup, note the ssid or name of your wifi network, also note the security encryption and phrase you are using. If you don't remember you can set it again there and save but then you will need to reconnect to it, if all else fails use a data cable and plug directly up to the router to manage it.
Once you know your wifi name and security key you setup, go to pc 2 and use the wireless utility scan or refresh you should see the name of your wifi network, click join to connect, it will challange you for the password. It if doesn't then all of your neighbors can use your internet and access your computers. Need to be sure to secure your wifi signal by managing it via the web management using your web browser.
Verify that it is indeed a wifi signal problem by moving the laptop upstairs temporarily.
If this fixes the problem, you're getting poor wifi signal downstairs. Not much you can do with the elements at hand. So try adding another element: install a wifi signal repeater (around US$ 25) somewhere in the middle. Or you can run a cable (or use Powerline Ethernet - around US$ 100) to downstairs, and there install a wifi access point (US$ 30-60). Or directly connect the laptop to the newly installed network wire.
If the problem isn't fixed, you have some other problem on the laptop: most likely a faulty network configuration. Verify against whatever PC you have upstairs; they should have identical configurations except their IP address (if fixed instead of DHCP).
Just to be on the safe side verify the laptop is properly operating and immune from virus and malware. Not all slowdowns are the system's fault.
Connect your Internet (DSL/Cable) modem to your router and power ON them both. Now turn ON your laptop's wifi receiver by either using a hard button, a sliding button or whatever button it is in your laptop's body. OR, maybe your laptop have a key combination to power on your wifi receiver like FN + F10. Make sure the wifi LED lights and there you can use your internet broadcasted by your router.
Laptop normally have single chip WiFi or Wireless Cards...
These cards could be used as client(connecting to wireless router), adhoc or access point(a WiFi card could be used as Access Point to route your LAN(Wired) connection on WLAN)...
Your laptop WiFi card is already busy as a Cleint, so if you want to use it as AdHoc, you have to remove all the other connection with the WIreless...ie, Disconnect the WLAN from connecting other devices, and follow the below mentioed steps to connect your device..
When you are using Client mode you are not able to use it on Ad-hoc or Access Point feature...
Setup laptop to Ad-Hoc
1)Navigate to control panel and choose network connection, Right click on the Wireless network connection and click on the Properties on Wireless NIC 2) Click-Wireless Networks Tab 3) Click-Add 4) Provide SSID Name, name to identify you rnetwork 5)Security -Net Auth: Open 6)Make -Data Encryption: Disabled 7) In the check box present-Check on This is a Computer to Computer (ad-hoc) network.
Change the IP address of the Wireless NIC card, by choosing TCp IP in the properties of WLAN and choosing TCP/IP v4 from the installed service
TCP/IP on Laptop -IP: 10.0.0.1 -Subnet: 255.255.255.0
TCP/IP on iPhone -Static IP -IP: 10.0.0.2 -Subnet: 255.255.255.0
Now try searching for Wireless through your phone, you should able to connect..
Please leave me comment, if you need further assistance
Make sure your desktop doesn't have static IP address. Go to Network Connections, Properties of Local Area Connection, Internet Protocol > Properties. Select Obtain IP Address Automatically and Obtain DNS Servers Automatically. Apply the changes and restart the computer.