Detecting Problems of

Computer System and

Network Rules in
Diagnosing Computer
System, Diagnosing
Network Connection,
Operating System (OS)
Errors
OBJECTIVES:
At the end of the study, students should be able to:
1. Determine ways on how to detect problems in a
computer.
2. Share the importance of knowing how to detect
problems in a computer.
3. Perform at least one way on how to diagnose a
computer problem.
How to
Diagnose
a
Computer
Problem
 1. Check that the cables
and components are
properly connected.
This is especially important if you recently
upgraded your computer. Open your computer
and make sure that all the cables, RAM chips,
the video card, sound card, network card, and
other components are all securely attached to
the motherboard.
2. Check the POST
POST stands for "Power On Self Test". This is
part of a computer's startup program that is
used to diagnose the keyboard, random
access memory (RAM), disk drives and other
hardware to make sure they are working
properly. If the POST detects any errors in the
hardware, it will either display a text error
message on the screen or a series of short and
long beeps.
3. Check the load time
of the operating
system
The time it takes for an operating system to
load when a computer boots up greatly
depends on the hardware of the computer is
running. If you notice your operating system
takes significantly longer to load than it used
to, this may indicate a problem with your hard
drive that is preventing your computer from
retrieving information from your hard drive.
4. Check for any
graphics problems
If your computer is able to boot properly, but
you notice graphics problems, this may
indicate driver failures or hardware failures
with graphics cards. If you suspect there might
be a problem with your graphics card, you
should first update your graphics card drivers.
If the problem still persists, you can download
software to test your graphics card.
5. Check for hardware
problems
Many computer problems are caused by
hardware failures or problems with hardware
drivers. Windows will usually notify you about
devices that have a problem. You can also use
Device Manager to check the status of
different hardware devices. Double-click a
category in the Device Manager to display all
devices in that category. Then double-click a
specific device. Any errors with the device will
be displayed in the "Device Status" box under
the "General" tab. Check all devices.
6. Check any newly
installed software
Some software may require more resources
than the system can provide. Chances are that
if a problem begins after software starts, the
software is causing it. If the problem appears
directly upon startup, it may be caused by
software that starts automatically on boot.
Uninstall any recently installed programs and
see if the problem continues. You may also
want to limit the number of startup programs.
7. Check the RAM and
CPU consumption
If your computer is choppy or running slow, it
is good practice to see if a program is
consuming more resources than the computer
can provide. An easy way to check this is to
use the Task Manager, right-click on the
taskbar at the bottom of the screen and click
Task Manager. Click the Processes tab. Click
CPU to display a graph of the current CPU
usage. Click Memory to see a graph of the
RAM consumption.
8. Listen to the
computer
If the hard drive is scratching or
making loud noises, shut off the
computer and have a professional
diagnose the hard drive. Also, listen
to the CPU fan. If the fan is blowing
hard, this could mean that your CPU
is getting too hot because it is
working too hard.
9. Run a virus and
malware scan
Performance problems can be
caused by malware on the
computer. Running a virus scan can
unearth any problems. Use a trusted
antivirus program that is frequently
updated, such as Norton, McAfee, or
Malwarebytes.
10. Check for the
problem in safe
mode
As a last-ditch effort, check the
problem in safe mode. If the
problem persists in safe mode, it is
a fair bet that the operating system
itself is to blame. You may need to
Reinstall Windows.
 A reliable network is of
The Importance of a paramount importance for
businesses in today's digital
Reliable Network: landscape. It serves as the
Why Businesses foundation upon which a
multitude of critical operations
Need to Diagnose and activities are built. Whether
you're a small startup or a large
Network Issues
enterprise, here's why a reliable
Internally network is indispensable for the
success and growth of your
business:
Uninterrupted Efficient
Communication Operations
A dependable network ensures From inventory management to order
seamless communication among processing, businesses heavily rely on
employees, clients, partners, and interconnected systems. A reliable
suppliers. Email, video conferencing, network enables smooth data transfer
instant messaging, and VoIP (Voice and real-time updates across
over Internet Protocol) calls rely on a different departments and locations.
stable network connection. Any This efficiency translates into
disruptions can lead to missed streamlined processes, reduced
opportunities, delayed decision- errors, and improved overall
making, and hindered collaboration. productivity.
Data Remote Work
Security and Flexibility
Networks play a pivotal role in The rise of remote work necessitates a
safeguarding sensitive business dependable network that supports
information. A secure network remote employees' access to
infrastructure helps protect customer company resources, databases, and
data, financial records, proprietary applications. A strong network allows
information, and trade secrets from employees to work effectively from
unauthorized access and cyber various locations, enhancing work-life
threats. A compromised network can balance and expanding the talent
lead to data breaches and legal pool.
consequences.
Customer Business Continuity
Satisfaction and Disaster Recovery
In a digital-first world, customer Should unforeseen events such as
interactions and transactions natural disasters or hardware failures
frequently occur online. A reliable occur, a resilient network ensures that
network ensures that customers can critical data can be backed up,
access your products, services, and replicated, and recovered seamlessly.
support channels without disruptions, This capability contributes to
leading to higher satisfaction rates maintaining business continuity and
and repeat business. minimizing downtime.
Competitive
Advantage
In today's competitive market,
businesses with a strong and reliable
network have an edge. They can
respond swiftly to market changes,
innovate faster, and deliver superior
customer experiences, positioning
themselves as leaders in their
respective industries.
Understanding the Common
Signs of Network Problems: How
to Proactively Diagnose Network
Issues
Absolutely, understanding the common signs of
network problems is essential for anyone
looking to maintain a stable and reliable network
connection. These signs often serve as early
indicators that something may be amiss within
your network infrastructure.
Slow Internet Intermittent
Speeds Connectivity
Slow internet speeds are one of the Experiencing sporadic connectivity
most noticeable and frustrating disruptions, where your connection
network issues. Web pages take longer drops unexpectedly and then
to load, videos buffer incessantly, and reconnects, can be incredibly
downloads crawl at a snail's pace. This disruptive. This could result from
sluggishness can stem from a variety wireless interference, faulty network
of causes, including network cables, or hardware malfunctions
congestion, bandwidth limitations, or such as a problematic router or
even issues with your Internet Service modem.
Provider (ISP).
High Latency and Packet Loss and Data
Ping Times Corruption
High latency, often noticeable as lag Packet loss occurs when data packets
or delay, can hinder real-time fail to reach their destination, leading
activities like online gaming, video to incomplete or distorted
conferencing, and VoIP calls. Elevated information. This can manifest as
ping times indicate that data is taking distorted audio or video during online
longer to travel between your device calls, choppy streaming, or disrupted
and its destination, which might be online interactions. Hardware issues,
caused by routing inefficiencies, network congestion, or faulty cabling
network congestion, or distance. might contribute to packet loss.
Devices not Slow Local File
Connecting Transfer
If you're unable to connect certain Slow file transfers between devices
devices to your network, or they within your local network might
experience frequent disconnections, indicate congestion or hardware
it could indicate issues with your limitations within your network
router settings, Wi-Fi interference, or infrastructure.
IP address conflicts.
Frequent Network Unresponsive Websites
Timeouts or Applications
Network timeouts occur when your If certain websites or applications are
device fails to establish a connection consistently unresponsive or slow to
to a remote server or website. This load, it might indicate network issues
can be due to network congestion, affecting your connection to specific
DNS (Domain Name System) issues, or servers or services.
even problems at the server end.
Inconsistent Video Unexpected
Streaming Quality Downtime
Fluctuating video streaming quality, If your network experiences sudden
such as videos switching between and unexpected downtime, where all
different resolutions, can be devices lose connectivity, it could be
attributed to network issues causing due to various factors, including
the streaming service to adjust the router malfunctions, power outages,
quality in real-time to compensate for or ISP-related problems.
a fluctuating connection.
How to Fix the
'Operating
System Not
Found' Error
Causes of the 'Operating
System Not Found' Error
There are some simple
reasons this could happen,
and it’s unlikely that your
important data has been
erased. Here are some
causes for this error:
A non-bootable device is trying to
boot up
BIOS has been misconfigured
Boot records are damaged
The hard drive is damaged or
unreachable
 How to Fix the 2. Disconnect unnecessary flash
drives, eject the disc if there's one in
'Operating System the disc drive, and remove any floppy
disks. Your computer might be trying

Not Found' Error to find a suitable OS on one of those

devices, and if it can't, it might display
the “Operating System not found”
error.
1. Restart your computer.
The error could be a temporary glitch 3. Boot into BIOS and make sure the
that a restart will fix. If you don't see a hard drive the operating system is
normal restart option, use the installed on is listed as the first boot
Ctrl+Alt+Del method. device. If it's not, change the boot
order so that it is.
4. Reset BIOS back to factory default
settings. Undoing every BIOS
customization might reset something
6. Finally, reboot your computer to see
that was previously hiding the hard
if the “Operating System not found”
drive or corrupting how the operating
error has been fixed.
system could be found.

5.Repair the boot records. Valid boot

7. Reseat the hard drive's power and
records are vital for a normal boot
data cables. Unplugged or loose cables
process. If the master boot record
could be the cause of the error.
(MBR) or boot configuration data
(BCD) store are corrupted or missing,
you might see the “Operating System
not found” error.
8. Reinstall the Windows operating
system. The “Operating System not
“Technology will
found” error might be literal. It's never replace great
possible that malware or an
unintentional format has wiped the teachers, but in the
OS from the hard drive.
hands of great
9. At this point, a faulty hard drive is
the only remaining reason for why
teachers,
you're still getting the error. Replace it’s
the hard drive and install a fresh
version of the operating system to fix transformational.”
the error.
George Couros
RECOGNIZING AND DETECTING THESE COMMON SIGNS OF
COMPUTER SYSTEM, NETWORK PROBLEMS, AND OPERATING
SYSTEM ERRORS ARE THE FIRST STEPS TOWARD ADDRESSING AND
DIAGNOSING NETWORK ISSUES PROMPTLY. BY PAYING ATTENTION
TO THESE INDICATORS AND EMPLOYING PROPER NETWORK
TROUBLESHOOTING TECHNIQUES, YOU CAN ENSURE THAT YOUR
NETWORK REMAINS ROBUST, EFFICIENT, AND DEPENDABLE FOR
ALL YOUR DIGITAL ENDEAVORS, ESPECIALLY THE COMPUTER AND
ITS SYSTEMS.
Do you have
any questions?
Send it to us! We hope you learned
something new.
 THANKS
FOR
LISTENING!