MODULE#13:
COMPUTER
SYSTEM
SERVICING
LESSON#46: STANDARD
PROCEDURES ON REPAIRING
NETWORK ERRORS Ruzzel Cedrick G. Zaballero
9-Almario
Standard Procedures on Repairing Network Errors
Objectives
You should learn how to repair network errors
based on standard procedures at the end of
this lesson.
Before getting help from the internet service provider (ISP) or from a technician, standard
procedures on repairing network errors should be done. These standard steps are basic
and requires only common sense. Knowing this easy troubleshooting guide will not only
save you from the hassle and frustration, but more importantly, will save you and other
people’s time and effort.
Let’s learn about it!
There is no perfect chronological way to repair your network, but it is important to follow the guide a step at
a time.
1) Make sure your computer and the internet source (the router or the modem) are properly connected to a power
source/ outlet. If the router will not turn on, do a reboot (turning off for 10 seconds, and then turning on). If this still does
not work, call your internet service provider (ISP) about it. If it works, proceed with the next steps.
2) Network cable issues
For wired connection, plug the Ethernet/ RJ45 cable from the router to the respective port on your computer. If
the port didn’t light, try plugging it again. If you are sure that it is linked snugly, there could be a hardware
problem. Before replacing the network cable, have it tested with a LAN tester.
3) For wireless connection, the next step is to ensure that the wireless adapter is turned ON. Using your
computer’s manual, locate your wireless adapter switch. This is usually just along the edge of a laptop and
looks like a small switch. The computer should list the wireless signals nearby when you click the internet icon
along the taskbar.
4) Passphrase. Once a network is selected, make sure the correct passphrase or security key is entered when
the network is secured.
5) Ping Command
There are many reasons why the connection with the internet host is lost or is not going through. To make sure that the host
is still online and is just busy, a ping command is sent. A successful ping response should include these statistics: packets
received and round-trip times. To do this, run the command window from your computer. Send a ping command by typing
ping IP address provided for your computer, hit Enter.
6) IP Config
If there are no responses from the IP address you are connected to or if this message is received, “Local area
connection” doesn’t have a valid IP connection, the next step is to refresh the IP address or request for a working IP
address. If using a static IP address, contact the IT admin of your local area network. If not, proceed with the next
steps.
Run the command window.
*Type ipconfig/release then hit Enter.
*Wait for the results before typing ipconfig/release then hit Enter.
*Wait for the results. Next, type ipconfig/renew then hit
Enter.
*Wait again for the results before typing in Exit then hit Enter.
*Reboot the computer and try again the connection.
7) Firewall issues
If the computer is connected to a valid IP but are experiencing Firewall issues, open your
firewall software and do the following. Let’s use Windows firewall as example:
•The green check icon indicates firewall is on.
•Click Allow an app or feature through Windows Firewall
•A checkmark should be in the box of your browser, e.g., Google
Chrome.
8) Proxy server issues
If the issue is connecting to a proxy server, obtain the proxy server information from the provider first then
do the following.
•Go to Chrome Settings.
•Click Show advanced settings…
•Go to Network and click Change proxy settings…
•Go to Connections tab and click LAN settings.
•Check the two boxes under Proxy server.
•Use the proxy setting information provided by the source to enter in the boxes
Address and Port.
•THESE STEPS MAY SEEM
CONFUSING, BUT THEY ARE
ACTUALLY EASY. DON’T GET
OVERWHELMED AND JUST DO A
STEP AT A TIME. IF THESE
WON’T WORK, THERE COULD
BE TWO ISSUES PRESENT:
HARDWARE AND ISP
PROBLEMS. YOU MAY CONTACT
YOUR TECHNICIAN OR ISP ONLY
AFTER MAKING SURE YOU’VE
PERFORMED THESE STEPS.
