I just bought a new laptop Samsung NP R780, it did work when it was tested; after I brought it back home, tried wireless network, it connected for a few minutes, but the internet didn't work at all; then the wireless disconnected itself, and couldn't connect again. I've checked the route and moderm, everything was fine. And another laptop works perfectly. What shouldIdo? Thanks
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
CONTINUAL DISCONNECTION OF WIRELESS CONNECTION
There are a few things that can cause you to lose wireless connection with your wireless router.
1. Weak signal strength, check the signal strength on your wireless card. If it is weak move the wireless router away from brick or concrete walls and if possible locate the wireless router higher up.
2. Have you secured your wireless router from people near your from unauthorized access? i.e. change the default password, setup encryption use WPA2 or WPA, change the default SSID, and turn off SSID broadcast, and for added protection, enable MAC address filtering which allows only the MAC address/es of your wireless card/s to connect to your wireless router.
3. You could be getting interference from electrical sources such as air conditioners, arc welders, washing machines etc. If so, the power supply to the wireless routers and computers etc should be connected to a surge protection power board, better still connect your computer equipment to an UPS (Uninterrupted Power Supply).
4. Check the channels of the wireless routers and access points in your area and change the broadcast channel on your wireless router to an unused channel or one that is currently used but has the weakest signal strength. This will minimize interference with your wireless router from other wireless routers and access points in your area.
Things That Affect Wireless Router Signals
1. Many wireless routers are using the same wireless channel. Many manufacturers choose channel 6 as the default.
2. Analogue video senders used to send audio and video to other TVs in the home.
3. Microwave ovens emit interference in the 2.4GHz band.
4. Wireless speakers and console controllers can cause interference with the wireless router.
5. Bluetooth devices, newer Bluetooth devices can jump to different frequencies if there is a connection problem.
6. Power cables located near the wireless router can cause drop outs and speed reduction.
7. Fish tanks will cause massive Wi-Fi shadow on the other side of the tank from the wireless router.
8. Depending upon the location of large mirrors will reflect wireless signal away your computer.
9. Building materials will block wireless signals such as plasterboards with metal foil, reinforced concrete walls and floors. Also objects near the wireless router such as metal filing cabinets and other electrical appliances.
10. Blinking Christmas lights can reduce Wi-Fi performance by 25% when it is close to the wireless router.
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SOURCE: Help me with IBM A21M Wireless problem.
Make sure that there are NO electrical devices between you and the wireless router. Some electrical devices will mess your signal up.
(cordless phones are known to mess with them) too.
Microwaves interfere with the signal from your router. Interference
means a low quality signal.
The following steps help you troubleshoot a bad
wireless connection. Stop following the steps when the connection
problem is solved:
1. Refresh the wireless connection that is giving you trouble.
2. Temporarily disable the firewall or Internet security software on the computer that is having connection troubles.
3.
Open the wireless connection manager and make sure that the SSID is
correct. Also make sure that encryption settings and keys match the
settings in your WAP (Wireless Access Point).
4. Restart DHCP (Dynamic Host Control Protocol) on your WAP; if necessary reboot the WAP.
5.
If the troublesome Wi-Fi adapter is removable - such as a USB, cardbus,
or Ethernet bridge adapter - remove or disconnect it and disconnect any
power cords. Then reconnect the device.
6. Right-click the My Computer icon in the Windows Start menu and choose Properties.
7. In the System Properties dialog box, click the Hardware tab and then click the Device Manager button (see Figure 1).
8. In the Device Manager window, click the plus-sign next to Network Adapters (see Figure 2).
If
you see a yellow exclamation mark next to the name of the adapter,
something is wrong. Right-click it and choose Uninstall, restart
Windows, and then re-install the driver software as described in the
manufacturer's instructions.
SOURCE: Keep losing internet connection
Recommendation: If you can switch from the 3rd party wireless utility to the Windows utility. There should be a check box under the properties that says, "Let Windows manage my connection." Also turn off any power management that stops your drives, suspends the machine, etc. When doing WEP, use the actual key, not your password. i.e. the one that looks like "aaff996753bc" not "rosebud".
Reason: Windows wireless starts before you even log in and loads as a service, it runs whether your logged in or not, sleep mode, etc. 3rd party utilities...especially my personal bane of all wireless devices "Netgear" load as applications. That means they don't initialize until after log in and they can be suspended completely or prioritized by power management and resource management utilities when the machine is idle. As for the key thing... WEP translation with Linksys especially can be a little funny with some wireless so I use the key itself which always works.
SOURCE: Wireless Connection
press the FN button and F1 at the same time... that switches the wireless on. :-)
x Peach
SOURCE: My Toshiba Equium A100-02l won't connect to the wireless internet
Click the Start button 
or you may visit
http://windowshelp.microsoft.com/Windows/en-US/help/2d8d5582-c5bc-4395-945f-5c6a273c5afa1033.mspx
in relation to this, please check your network adapters if they have a symbol right on tope of their icons. lemme know what it look like...
- voodoomox.
SOURCE: laptop keeps losing wireless connection
make sure the wep key you apply it is correct.just reconfgure the wireless connection.
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I did input the wireless key but no webpages came up at although the wireless was connected. I was told by BT that my network card gone faulty and needs to replace. Then I took the laptop to PCworld today, they did something, when I came back to check and I found out my laptop can't even find any wireless signal! So the wireless doesn't work at all! Where else can I go? An IT professional has just been and he can't do anything about it only suggested me to get a longer cable for the internet, there is no hope to use wireless on my laptop!
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