Wired Network Adapter (also known as a NIC, RJ45 jack or port, Figure 1) - Desktops and many notebook computers have this device installed inside the computer (some newer notebooks use a RJ45 to USB-C dongle, Figure 2). If you do not know if you have a wired adapter installed, contact the manufacture of the computer.
Figure 1: RJ45 Port
Figure 2: RJ45 to USB-C Dongle
Broadband Router - The router is used to connect all of your computers to a network, and to the Internet (when you only have one computer this device is not needed, as you can connect directly to the Modem your ISP provides).
Broadband Internet Service Provider (ISP) - Telephone (DSL) and Cable TV companies usually offer Internet service.
Your Broadband Internet Service Provider (ISP) will either come to your residence or business and set up the broadband modem or send you a do-it yourself kit.
When using the do-it yourself kit, follow the instructions provided for setting up the broadband modem or contact your ISP. Most likely you will need to contact your ISP anyway to set up a user name and password (when using DSL), or register your broadband modem (when using cable).
When you are not using a broadband router, the process is finished.
Refer to the following instructions for setting up your wired network with a broadband router.
Once the broadband modem is set up and working remove the network or USB cable that is connecting the computer to the modem.
Turn off the broadband modem for at least three or more minutes (this is necessary to make the broadband modem find the broadband router later).
After the three or more minutes is up, attach the broadband router with the supplied network cable and turn the broadband modem back on.
Refer to the documentation that comes with your broadband router for installation instructions.
Note: For more information on setting up you broadband router refer to the manufacture's website (Table 1).
Plug a network cable into the RJ45 jack of the computer (Figure 1) or a USB-C to RJ45 dongle into the USB-C port of the computer (Figure 2), and the other end into the LAN port on your Modem or broadband router.
Note: Refer to the Dell Knowledge Base article Manuals and Documentation for your Dell Product, for information on how to get the manual for your computer, which will provide you the location of the of the RJ45 or USB-C port on your computer.
Try a known-good network cable (if available), at least make sure both ends of your Ethernet cable are securely plugged in to your computer and into the broadband router or modem.
Run the Network Troubleshooter.
In the search box type, troubleshoot
Touch or click Troubleshooting (Control panel).
Touch or click Network and Internet.
Touch or click Internet Connections.
Touch or click Next and follow the prompts.
Turn off and then turn on all the devices on the network to reboot and synchronize them, for more information refer to the Turn Off and Then Turn on All the Devices on the Network tab.
Run the Dell SupportAssist Optimize Network application.
In the search box type, supportassist.
Touch or click SupportAssist (Desktop app).
Note: When SupportAssist does not appear in the list of application, you will need download it, either on the computer that has the issue (if possible) or to a USB memory key on another device that can reach the internet. For more information on how to obtain and install SupportAssist, browse to the SupportAssist for PCs and tablets page. You may need to provide the Service Tag or Express Service Code of your Dell computer or select your computer model from a list.
Touch or click Optimize My System.
Touch or click Optimize Network.
Touch or click Run Now.
After the Optimize Network is finished (the status bar will read 100%) touch or click the History tab.
Touch or click the latest listing of Optimize Network (Manual) to review the results.
Make sure the most current network adapter drivers, computer BIOS and router firmware are installed.
Note: When the affected device has no internet connectivity to download a driver or BIOS, you will need to do one of the following to get the driver on the affected device:
Use another device that does have Internet connectivity to download the driver and use a USB Flash drive to transfer the driver to the affected device.
For tablets, use the USB cable that came with the tablet to transfer the driver to the tablet, which was downloaded to another device that does have Internet connectivity.
Make sure the network adapter is connecting at its highest level. For more information, refer to the Configure the Network Adapter Settings for Optimal Performance tab.
For more information on resolving issues getting to the Internet, refer to Microsoft Knowledge Base article Fix Network Connection Issues in Windows 10 for advanced troubleshooting steps such as the resetting the TCP/IP stack.
When the following steps do not resolve the issue, the Operating System on your computer has some sort of corruption. To explore the options on how to resolve any corruption, and when to use them, refer to the Dell Knowledge Base article Reset or reinstall Windows 10 on your Dell computer.
Disconnect the power from the broadband modem and leave the broadband modem disconnected for at least 3 minutes.
Shut down all the computers that are connected to the network.
Disconnect the power from the wireless router.
Verify that a network cable is connected from the Broadband Modem into the Internet or WAN port on the wireless router.
Verify that no USB cables or serial cables are connected to the Broadband Modem.
Connect the power to the broadband modem. Wait for at least 2 minutes for the Broadband Modem to initialize.
(If the Modem does not establish an Internet connection successfully, unplug the Modem. Wait for at least 5 minutes, then plug in the Modem.)
Connect the power to the wireless router. Wait for at least 2 minutes for the wireless router to initialize.
Turn on the computer and try connecting to the Internet.
Note: When you still cannot connect to the internet, check to see if other computers are able to get on the internet, or connect this computer with a network cable directly to your router (when these are options). When no other computers or this computer connected directly to your router cannot get to the internet, you will need to contact your Internet Service Provider (ISP) or the manufacture of your router.
When your computer still cannot connect to the Internet, refer to the Resolving Not Able to Get to the Internet tab, and continue with Step 4.
To determine which wired adapter is installed in your computer and configure the Network adapter settings for optimal performance, perform the following steps.
Press and hold the Windows () key, and then press the q key.
In the Search box, type change ethernet settings.
Touch or click Change Ethernet settings (System settings).
Touch or click Change adapter options.
Hover your cursor over the Ethernet listing making note of the network adapter manufacture and model number.
Note: The manufacture and model number is how the wired adapter will be listed in Device Manager.
Press and hold the Windows () key, and then press the q key.
In the Search box, type device manager.
Touch or click Device Manager (Control Panel).
In the Device Manager window, click the arrow sign next to Network Adapters.
Double-tap or double-click the desired Network Adapters (it should read as Ethernet).
Click the Advanced tab.
In the Property: box, click Speed & Duplex and select Auto Negotiation from the drop-down menu.
Save any data, close any open program(s) and restart the computer.
When your computer still cannot connect to the Internet, refer to the Resolving Not Able to Get to the Internet tab, and continue with Step 7.