I format my computer i need to install the linksys router

Good day,
This might be of help .
Steps To Fix Linksys Router Error 321:-
Step1:- Check the Firewall Settings
To check the Firewall Settings is the first priority for the users. Then check the firewall settings of the computer/ Laptop, will be helpful to find the problem. If there is any firewall installed on the computer, so the users need to turn it OFF.During the process, the users ensure that the Local Area Connection on the computer is not disabled. The Local Area Connection should not have any static IP address assigned. If there is any then the users need to immediately set the IP address to automatic.
Method2:- Run the Installation CD Again:-
The users require trying to run the CD again and ensure when the CD runs, it will ask to connect the computer and the modem to the router with the cable. So the users will need to notice, that there all the lights lit up on the router. If it's not, then users will need to setup their router without the CD.
The users can get the instruction to setup router manually in the method 3.
Step3:- Try to Setup Router Without Installation CD
Setup Linksys Router without Installation CD is another best option for users in order to completely avoid the in order to fix Linksys Router Error 321.
Follow the below-given instruction to Setup Linksys Router without Installation CD:
First of all, connect the main computer to the Ethernet port on the router.
Then the users need to connect the modem to the Internet port on the router.
Now it's time to verify the status of the light that is blinking properly.
Next, users need to open the setup page of the Linksys Router and then change the Internet connection settings manually.
In the setup page of the Linksys Router, the users can change the settings of the router as per their needs.
Then the default IP address of many Linksys router is 192.168.1.1. And the default username and password would be an "admin".
Wait for a few minutes, when the main computer is able to access the Internet, so users need to create a wireless network for their wireless computers/devices.
or you can call them @ Toll Free 1-800-204-6959 that is Lynksys support.

In order to change the settings of the Linksys router, you will need to login to Linksys router setup page.
If you have installed Linksys/Cisco connect software on your main computer then you can change settings using that installation program.
here is link which may help you with Linksys E2500 router.
https://fixhomenetwork.com/blog/linksys-e2500-router-setup/

You can easily install Linksys router without installation CD>
Make sure that your computer is able to go online through the modem.
If your computer is not able to go online through the modem then you will need to call ISP first.
If your computer is able to go online through the modem
then you need to connect the computer to the router and the modem to the router.
open the set up page of the router and change the settings of the router according to the ISP.
Check this link to install linksys router manually.
Linksys router setup Easy steps

You could install the Linksys WRT54GS without any CD.

You could use the Linksys EasyLink Advisor to scan your network for the Linksys WRT54GS.

The Default IP-address is 192.168.1.1 so you should be able to connect to the Linksys with your Webbrowser when you do a factory reset of the Linksys.

SSID - which means service set identifier , its not in number format its your wireless service name
if u installed a new router for example if its linksys check the wireless light is on then go to your laptop search for wireless network and by default you can see linksys un secured selet and click on connect and you can start using wireless access

Check the below link how to set security for your wireless ,make sure the computer need to connected hard wired to teh router before performing this in any one of the number jack on the back normally u can see 1 2 3 4 use any one

http://vectrosecurity.com/content/view/48/26/

www.linksys.com/support get the software that matches your OS

The Manuals are located on the Linksys website:

http://homesupport.cisco.com/en-us/wireless/lbc/WRT160N

Select Downloads, choose your version, and on the right you can download the manual.

This is a well documented problem with linksys routers. Go to google and type in "error 321 linksys". You will have to manually configure the router as stated on the linksys forum posts.

Change your ip address on your computer temporarily to some number in the 192.168.1.X range so that it is on the same subnet as your router.

This article describes how to manually configure a Linksys Router for broadband DSL that uses PPPoE (Point-to-Point Protocol over Ethernet) for authentication. For automatic configuration options, please try: 1. Linksys Easy Connect (see Answer ID 1650 for more information), or 2. The Linksys Setup Wizard CD-ROM software that came with your Linksys Router. Simply insert this CD-ROM into an online computer before connecting your Linksys Router, and the Wizard will provide step-by-step instructions on how to install and configure your router. If you are unable to set up your Linksys Router by using one of the above options, use the steps below to manually configure your router. NOTE: It is recommended that you print this article for offline reference. STEP 1: Before You Begin In order to set up your Linksys Router, be sure to first have the following: 1. A Linksys Router. 2. A DSL modem. 3. A working computer that can be wired in directly to the router for initial configuration and testing. 4. Two (2) standard Ethernet network cables. Linksys Routers come with one (1) standard network cable that you can use. 5. The PPPoE DSL username and password assigned by your Internet Service Provider. Depending on the provider, your username format might be similar to username, vzn123456, or an e-mail address ([email protected]). If you are not sure what your username and password are, contact your Internet Service Provider for more information. STEP 2: Check Your Internet Connection Before installing your Linksys Router, it is important to first verify that you can successfully access the Internet by connecting directly to your modem (without your Linksys Router installed). 1. If you are connecting for the first time, follow the instructions provided by your provider to set up your modem and computer for online access. 2. Verify that you are able to access the Internet without any problems. If you are not able to get a connection, contact your Internet Service Provider for assistance. When you are able to access the Internet using your modem, continue to Step 3 and proceed with the installation of your Linksys Router. STEP 3: Connect the Hardware Follow these steps to connect your Linksys Router to your modem and computer. 1. Shut down your computer and unplug the power cords connected to your modem and Linksys Router if they are currently powered on. 2. Disconnect the network cable that connects to the back of your computer. 3. Connect the network cable that you just removed to the Internet port (or WAN port) located on the back of your Linksys Router. Your modem should now be connected to your Linksys Router. 4. Connect a second network cable back into your computer (into the same port that was disconnected in #2). 5. Connect the other end of the second network cable to one of the numbered ports located on the back of your Linksys Router (labeled 1, 2, 3, 4, etc.). Your computer should now be connected to your Linksys Router. The following diagram shows how your network should be connected. Verify that your connections are correct, and continue to the next step. 6. Plug the included power adapter into the router?s Power port. Then, plug the other end of the power adapter into a nearby electrical outlet to supply power to your router. 7. Turn on your computer. Do not turn on your modem at this time. Only your router and computer should be turned on for Step 4. STEP 4: Configure the Router Follow these steps to configure your Linksys Router. 1. On the computer that is connected to the Linksys Router, open a web browser such as Internet Explorer or Netscape. 2. Type http://192.168.1.1 into your browser?s Address or Location bar and click Go or press the [Enter] key on your keyboard. The IP address 192.168.1.1 is the default IP address of Linksys Routers. 3. A user name and password prompt will appear. Leave the user name field blank (empty), and type in admin (lowercase) for the password. The password admin is the default password of Linksys Routers. NOTE: The following username/password prompt screen will vary by operating system. 4. Once logged in, the router?s web-based Setup utility should load. In the section labeled Internet Connection Type, or WAN Connection Type depending on router model and firmware version, select the PPPoE option on the drop down list. Click here to view what an older Linksys router interface looks like. 5. Once PPPoE is selected, enter your PPPoE DSL username and password provided by your Internet Service Provider into the router?s User Name and Password fields. Depending on the provider, your username format might be similar to username, vzn123456, or an e-mail address ([email protected]). If you are not sure what your username and password are, contact your Internet Service Provider for more information. NOTE: Be sure to