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Basic PC Troubleshooting
Basic pc troubleshooting
Vanishing Files
No Display
Long Beep
Sudden Halt
Program wont Execute
No audio output
Wont Detect USB drive
Windows wont load
No hardisk detected
??
??
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??
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Objectives:
After the period, the students will be ableto: Enumerate the facts on pc troubleshooting.
Familiarize the basic flowchart of pctroubleshooting.
Familiarize the different technical details ofthe components of the motherboard.
Determine the problem of the pc using beepcodes
Listen attentively during class discussion
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Facts on Troubleshooting
Basic pc troubleshooting
1. Buy from a quality vendor with long warrantiesand a reputation for good service. Any PCmagazine, such as PC World or PC Magazineconducts truckloads of product reviews andvendor reviews
2. Consider buying extended warranties , especiallyif they include on-site service
3. Keep all manuals , CD Drivers and documentationespecially for the motherboard
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Facts on Troubleshooting
Basic pc troubleshooting
4. No matter what weird behavior your computerdisplays, do the obvious first
a. Rebooting cures most windows ailments
b. Check all the cables and power cordsc. Pay attention to error messages and write
them down word for word . If you call atech support , this is essential information.
5. Take it slowly and logically; often common senseis enough to see you through
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Facts on Troubleshooting
Basic pc troubleshooting
6. Figure out if you have a software or hardwareproblem. Most of the time it will be software.
7. If it is hardware problem the CPU is least likely todevelop terminal disease , hardware problems aremost likely to take place in the memory and harddrives.
8. If it is software problem, uninstalling and then re-
installing a problem application often cures theproblem
9. Always keep a system recovery disk in CD or in
floppy disk.
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Facts on Troubleshooting
Basic pc troubleshooting
Universal Troubleshooting Process1. Define your symptoms
Write down as many symptoms as you can2. Identify and isolate the source
Use the process of elimination. Make only onechange at a time.3. Replace
Use anti-static boxes for storage4. RetestSystem must be reassembled carefullybefore testing it
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Basic Troubleshooting Flowchart
Basic pc troubleshooting
a
osloading
isos ok?
isolate hdmajor components
isolate appsoftware
start
Yes
No
restart
start
check biossettings
isPOST ok?
start
aYes
No
BIOS loading
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Technical Details
Basic pc troubleshooting
Before you could actually troubleshootanything or solve any problem not just withcomputers, you must able to understand or
master how does the device work or whatmakes it tick.
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Technical Details
Basic pc troubleshooting
Memory1. When buying RAM take note of the
size and the speed.
2. Extended memory is all memory afterthe first 1MB of RAM.
3. Memory latency is the amount of time
it take to locate the data stored.
4. DDR have 240 pins, the diff. betweenDDR2 and DDR3 are speed and formfactor
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Technical Details
Basic pc troubleshooting
Memory installation
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Technical Details
Basic pc troubleshooting
Memory installation
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Technical Details
Basic pc troubleshooting
Memory Trouble Symptom
1. One long continuous beeps
Solution
1. Clean the RAM pins and RAM slot1. Used eraser to clean the RAM pin2. Used volatile liquid and cigarette silver to
clean the RAM slot
2. If defective, replace the RAM card Check the type of RAM for compatibilityreason
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Technical Details
Basic pc troubleshooting
Memory Trouble Symptom
1. The computer will always restart
Without a message talking about virtual memory After executing the DOS command (black screen)
2. The computer will suddenly halt and blue screenappears with some messages
Solution
1. Replace the RAM card
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Technical Details
Basic pc troubleshooting
Video Card
1. The video card is an expansion card that allows thecomputer to send graphical information to a video
display device such as a monitor or projector.
2. The Video Card is Also Known As: graphics card,graphics adapter, video adapter
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Technical Details
Video Card Installation
a. Connect the video card to the AGP slotor PCI Express slot
b. Install the video card driver
Driver is included when you buy anew video card
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Technical Details
Video Card Troubleshooting
a. Symptoms: One long and two short beeps The computer will not start and the
monitor power LED is color orange.(due to drivers conflict, improperconnection)
b. Solution:
a. Clean the pins of the video card(clean the AGP or PCI slot is highlyrecommended)
b. If defective, replace the device
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Technical Details
Basic pc troubleshooting
Microprocessor
a. Processor is very hot and needed somespecialize cooling system, like fan andheat sink.
b. There are only two types of receptaclesinto which processor can be inserted:either a socket or a slot. New processoruse Socket LGA775
c. Two famous manufacturer of processor are
Intel and AMD.d. New microprocessor is using 64bit of datae. Processor speed is measured in HZ
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Technical Details
Basic pc troubleshooting
Microprocessor Cooling System
Troubleshooting
a. Symptoms:1. Start the computer
2. Load the OS3. Suddenly it hang-up (no blue screen)b. Solution:
1. Check the cooling system of theprocessor (fan entangled with thewires)
2. If defective, replace itc. The system will stop working to prevent
further damage
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Technical Details
Basic pc troubleshooting
Microprocessor Cooling System
Troubleshooting
a. Symptom:1. The computer will not start
b. Solution:1. Do the process of elimination2. Replace the processor if found
defective
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Technical Details
Basic pc troubleshooting
Microprocessor installation
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Technical Details
Basic pc troubleshooting
Microprocessor installation
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Conclusion
There are methods or ways to preventtroubles of your pc
If problem exist, be patient and relax todetermine the symptom and diagnose theproblem
PC trouble has unique indicator
Knowing how device works will give us anidea how the device behave.
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Process of Elimination
Requirements
The power supply is ON but the system unit
dont boot-up
No beeping?
Process of Elimination
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Process of Eliminationstart
Power SupplyMotherboard
RAMVideo Card
Beep once?
Turn-On
X
A
A
Turn-Off
No
Yes
Turn-On
One long & twoshort beeps?
Video Card isDefective
end
B
Remove the VideoCard
Turn-Off
No
Yes
B
Turn-On
ContinuousBeeping?
RAM is Defective
end
Remove the RAMCard
Turn-Off
No
Yes
CPU is defective
Process of Elimination
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Process of EliminationX
Turn-On
Beep once?
That componentsis defective
end
Connect the othercomponents one
by one
Turn-Off
Yes
No