I have a linksys router. model number befsr41 v. 3. i have a acer computer and some reason it wont recognize the network, calling it unidentified network, and internet does not work.. what do i do

Try resetting the router and then configure it again.
To reset the Linksys back to the default settings - Press and hold the pinhole RESET button at the back of the router with the power ON for 20 secs. then release the RESET button.
To connect to your wireless router, the router's wireless settings needs to be configured with the SSID, encryption etc. and also the wireless cards in all the laptops/computers needs to be configured with these router's wireless settings. Then the laptops/desktop computers can communicate with your wireless router.
Connect a LAN cable from the Linksys to the LAN port on your computer.
Open a browser and enter the Linksys configuration URL
http://192.168.1.1
The default login = admin
The default PW = admin
You can protect your router by changing the default admin PW (write it down and put it in a safe place)
Go to the wireless configuration and set up the SSID and WPA or WPA2 encryption.
Now apply these settings to the wireless card in your laptop/computer.
To secure your wireless network from unauthorized access, please click on this link and follow my instructions :- http://www.fixya.com/support/r3559128-wireless_router_security

computer says its connected to an Unidentified Network Wireless router not working

There are wireless networking capabilities of the gateway that will prevent or allow specific MAC Addresses from connecting to the network. Go into the wireless settings and adjust the settings to accept the MAC address from your work computer. To find the MAC address from your computers network adapter go into a command prompt by typing cmd in the run box and typing "IPconfig /all" in the window. The MAC address is there it may be called Physical Address. It is always a 16 set of number and letter combinations divided by ":" between every 2 sets of number / letters. On your home desktop this same window will help you diagnose the problem. Your son's computer will help you with this, do this on his as well and compare the IP address with your home computer the address could be something like "192.168.1.?" the last number is going to be unique if the first three numbers match. If the IP address on your home computer doesn't match the first three octets "192.168.1" it will not get out through the gateway. If they don't match you can force it to be on the same network by setting up a static IP address by opening up the Control Panel / Networking icon and finding the icon for the network adapter that you are using and opening it up and clicking on "Properties" and clicking on IPv4 and clicking properties and clicking on Specify IP address and typing the first three octets of your son's computer and adding a fourth number that isn't "0" or "255". You can use any number between those two numbers except those numbers, and isn't the same as your son's IP Address or the Default Gateway which is the Linksys. The "Subnet Mask" will auto install but will be "255.255.255.0". The default gateway and DNS server will be the IP address of the Linksys which most likely will be "192.168.1.1". Click "Ok" on all the open dialog boxes and the computer should be able to get on the internet.

Had the same problem. What i did was in the Airport Configuration program goto "Airport" then to "Wireless" and then to "Wirelesee options" In this menu deselect "Use wide channels". Also i decreased the power of the 5.0 Ghz transmission, because i don't use it yet. But i think the "Wide channels" is the reason of the problem. It is a bit weird thoug, on my Airports Guest acount with no password and incryption, the Acer One loged on perfectly, but on my private network with WPA2 it did not. Aparantly the Guest network does not use "Wide Channels" Hope this helps, but take care, maybe the menu's are called differendly because i had to translate them from Dutch. Good luck.

you might need to reinstall the driver for your wireless adapter
Do these steps
-shut down your computer
-reseat your wireless adapter back to PCI slot
-turn on your PC
-Your PC should be able to detect your wireless adapter as a new hardware
-put your driver CD back to install your driver.

tada ..

Have you set the properties on the second computer to match the security expected by the router? Since one computer works I would compare the settings for the network connection and set the second computer to the same.

Is the acer wired to the router? call linksys technical support, if they cannot help try this http://technicalsupport.blog.friendster.com

you may need to directly connect to it using ethernet cable. insert the cable into any of the ports numbered, not the WAN/Internet port. then restart computer, if it's windoze. upon restart your network adapter should pick up ip address from router, if it's set up to use dhcp. if you don't receive a 192.168.x.x ip then check your services for dhcp and see that it's automatic and started.

If it says local or unidentified network that means you are just connected to the router on the network but not through the internet. Try to go to manage wireless network, remover your network there and add it again, connect to your own network and make sure to type the correct network key., then check again. You can also try connecting to other wireless network to further isolate the problem.

You router may be set to be DHCP enabled so that it allocates the ip addresses automatically to each pc, so check that the pc's network card with connection problems is set in the properties on the TCP/IP line is set to obtain an ip address automatically. You can also try, Start>run then type ipconfig /flushdns to clear the pc ip address and dns. and restart pc. Lastly if you pc is both network cabled and wireless, ensure one or the other is dissabled as this can confuse the ip adress alocation.