Network Connectivity Troubleshooting
To most computer support persons, having problems connecting to the Internet via a router and a high-speed connection is not a major issue. However, for those who do not understand some basic technology concepts, solving connectivity problems will be a struggle. The following will give you some tips of where to look for network connectivity problems and how to perform some basic network connectivity troubleshooting tasks.
Most of the initial steps of this process are common-sense and incredibly basic, but you would be surprised at the number of calls to help desks that are solved simply by having someone turn on a power switch or plug in a cable to a device!
1.Check the power. Make sure that the power is turned on to your router and that you can see some visible signs of that power on the front of the unit. Usually green or yellow lights flash or stay on constantly when the unit has power. If you do not have any of those, check the electrical outlet for power. Plug in a radio, clock, lamp or other device to see if the outlet is ‘live’. If so, continue on to the next step. If not, check your electrical box to make sure that your circuit breakers have not tripped because of an overload or other electrical issue.
2.Check the router. If you still see no lights on the front of your router, then unplug it from the electrical outlet and wait for a while (15 minutes to half an hour) and plug it back into that same outlet. Most of these have what we call ‘wall-wart’ type power supplies that have the square-ish black block on the end which plugs into the wall outlet (or power surge suppressor). Sometimes these can go bad. If you cannot get any of the lights to come on at all on your router, even if you test it in a known ‘good’ wall receptacle, it might mean that the power supply or router itself is defective.
3.Check the cables. Now, if you have confirmed that the electrical outlet is working properly and you are getting lights on the front of your router, then you need to check the network cable between your PC and your router. If you have a wireless router and are having trouble connecting by that method, then you need to troubleshoot first by trying to connect with a hard-wired connection, as it is easier to troubleshoot a hard-wired connection than a wireless one (once you have successfully established connectivity through a wired connection, you can resume troubleshooting wireless connectivity). Normally, your router should include at least one network cable for connecting devices directly to it. Use this cable to connect your PC to your router. On the front of the router are a series of lights (these differ in color by manufacturer) which indicate the presence of a network connection over the network cable (or Ethernet cable) between your PC and router. Locate the network cable which runs from your router to your PC and unplug it from the back of the router. Does one of the lights go out? If so, that is a good sign. If not, then go to the PC end of the network cable and locate where it connects to your PC. Right around this connection there are usually a set of led lights indicating a network connection. By removing your network cable from the PC, you should see the lights go out. And, with your PC powered on, removing this cable will also usually cause a message to come up on your Windows-based PC indicating that your network connection has been lost. If this happens, then it appears that at least your router and PC are ‘talking’ to each other. This is usually noted by the ‘flashing’ activity of these lights.
4.Reboot both your router and your PC. Sometimes a simple reboot will clear up any anomalies between network connections, and this will always be a step any help desk, ISP or router manufacturer’s support personnel will ask you to try.
Now that we have confirmed connectivity with the Internet, the remaining steps are to help you discover what the problem with your Internet connection might be.
1. Check functionality. Once the network cable has been confirmed to be working correctly, we need to see if the router is working correctly. Since you have already unplugged and re-plugged the router in and rebooted both it and your PC, that should have taken care of any automatic configuration issues that might have become hung up. High speed Internet providers can change the network address (also called the IP address) of your router at any time. This usually requires a re-boot of your router (and sometimes of your PC) in order to pick up that new address and begin communicating. Also, there are other network addresses that are used to get outside to the Internet that are automatically configured as well, but we will deal with those in a later step.
2. Test functionality. If after you have rebooted the router and PC and performed all of the steps above, but it appears that you are still having problems, make sure that you try other ways to get outside to the Internet by launching your email program (if you use one). If it works, but your Internet browser still does not, then something is preventing your Internet browser from resolving website addresses on the Internet.
3. Check virus software. When was the last time your PC performed an automatic update or a scan for viruses? Can you try to force an update now? Is it successful? If it has been a week since the last check for viruses, run a full system scan. If this does not work and no viruses are detected, move on to the next steps.
4. Try another system. Do you have another PC or laptop that you can plug in to your router to try and get out to the Internet, or do you know anyone else with a laptop PC who would be willing to bring it over to see if they can plug into your router and get out to the Internet? If so, that will confirm if you have a good working router and cabling. If you or they are able to get out to the Internet, then the problem lies with the original PC you were troubleshooting.
5. Contact your Broadband Service Provider. If you cannot get out to the Internet with another PC or laptop, work with their support staff to troubleshoot the connectivity issue.
6. Final options. If all else fails, take your PC to another location like a friend’s house or a relative who has high speed Internet access. Plug into their system and see if the PC will access the Internet. Another option is to take your PC to a local shop to have it examined for any virus or spyware software that is not being detected but is preventing you from accessing the Internet. Usually, these local PC repair companies have the software tools to help detect and eradicate these problems.
Troubleshooting a connection for your PC can be a frustrating thing to do because there are so many variables to address. Be patient, and follow the above steps and hopefully you will find the source of your problem sooner rather than later.
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