Computer Troubleshooting Solution

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This article is taken from another site, out of nowhere.We nevertheless admits that it is not from us and it is credited to them who publish it on the internet.The article was written in Bahasa Melayu & had been translated into English language.
This article had been edited by Zainaza on 15-April-2014

Equipment : CPU Set

Problem: Blank screen 

Solution: 

    • Check the signal cable/connector. 
    • Check the power supply unit & make sure the fan functional
    • Check the power connector (connection) to the motherboard. 
    • Check the RAM.
    • Check SVGA card/monitor card/Graphics card (AGP / PCIE). 
    • Check the installation/location of the hard disk cable.
    • Check the motherboard/CPU/RAM. 
    • Make sure there is 2 or more cards are in the same function in a motherboard. 
    • Make sure the power output (0, +5 V-5V - 12V and +12 V) Power supply unit adequately.
    • Refer to the manual. 
    • Change the motherboard.

    Equipment : Keyboard

    Problem: When typing on keyboard,some letter does displayed on screen.

    Solution:

    • Letter fluency test button 
    • Change the keyboard
    Problem:  Keyboard error when boot-up the pc.

    Solution:

    • Check the key lock. 
    • Check the keyboard connector. 
    • Check the BIOS for the keyboard. (Setup/configuration)
    • Change the keyboard. 

    Equipment : Mouse

    Problem: Mouse pointer arrow does not move smoothly 

    Solution:

    • Clean the roller and ball/Check the LED lights under the mouse 
    • Check the mouse configure/control. 
    • If the serial port, try using a USB mouse 
    • Check the mouse configure/control on windows 
    • Change Mouse
    Problem: Not functioning

    Solution:

    • Check the mouse connection 
    • Change the mouse.

    Equipment : Monitor CRT

    Problem: Blank screen (Electronic Knowledge)

    Solution:

    • Check the fuse on the 3 pin socket outlet (240V) 
    • Check the fuse on the board monitors 
    • Check the components in the power supply area. 
    • Check the "high voltage" capacitor 
    • Change the monitor.
    Problem: Display only at the center of the screen (Electronic Knowledge)

    Solution:

    • Check the horizontal component of the area. 
    • Check the "tantalum capacitor / coupling" 
    • Change the monitor.
    Problem: Display only at the bottom of the screen (Electronic Knowledge)

    Solution:

    • Check the vertical component of the area. 
    • Check the transistor pole
    • Change the monitor.
    Problem : Display color on the screen changed (Electronic Knowledge)

    Solution:

    • Check the signal cable core / connection 
    • Check the video card /graphic card
    • Change monitor
    Problem : Contrast (background) too bright. Horizontal line spotted (Electronic Knowledge)

    Solution:

    • Adjust the contrast on the control panel. 
    • Adjustable screen button on the "High voltage" capacitor.
    Problem : Display on the screen blur (Electronic Knowledge)

    Solution:

    • Adjust the brighness on the control panel. 
    • Adjust the focus button on the "high voltage" capacitor.
    • Change the monitor.
    Problem : Disturbances on the screen (Electronic Knowledge)

    Solution:

    • Check / replace 2 chips of the same 
    • Check the card connector / "gold finger"
    • Check the card slot 
    • Switch card.
    Problem : There are lines on the screen

    Solution:

    • Check SVGA card/connector 
    • Check the card slot / Jumper (1M, 2M) (on graphic card)
    • Switch card or change another SVGA card

    Equipment : SIMM RAM

    Problem: Blank screen 

    Solution:

    • Change the RAM to another bank or "slot"
    • Check/replace RAM one by one. 
    • Check the connection to the RAM slots. 
    Problem: Detect memory is not the same amount of RAM installed.
    Solution:


    • SIMM slots (one) has duplicate the other slot 
    • Check your RAM speed compatibility with motherboard

    Equipment : Operating System (Software)


    Problem : System slow

    Solution:

    • Check the CPU on Motherboard.
    • Add RAM capacity. 
    • Check for viruses/Install Anti-virus
    • Close unneeded programs. (start up) 
    • Programs need a lot of memory (to run). 
    • Check the turbo button. (Old computer) 
    • Check Hard drive 
    • Check the temperature of processor 
    • Make sure the processor fan running
    • Replace "thermal liquid" if necessary (at the bottom plate on heat sink)

    Equipment : Power Supply Unit

    Problem: If "on" fan does not spin, when "off : twisting moment (Electronic Knowledge)

    Solution:

    • Check the power supply 240 volt
    • Check the switch for the power supply unit .
    • Check or replace fuse .
    • Change the power supply unit.
    Problem: The fuse broken when the device is "ON" (Electronic Knowledge)
    Solution:


    • Check DIODES
    • Check the transistor
    • Check the bridge rectifier
    • Check the voltage regulator
    • Change the fuse
    • Change the power supply unit .
    Problem: Spark electric or a small explosion occur (Electronic Knowledge)
    Solution:


    • Switch the cable (one pair)
    • Make sure the bridge rectifiers corrected
    • Change the power supply
    Problem: Fans chime
    Solution:


    • Clean the dust
    • Make sure that nothing/cable attachment on the blade
    • Check the fan bearings
    • Change fan
    Problem: When the "on" shock occurs on the casing (Electronic Knowledge)
    Solution:


    • Make sure the ground on the chassis works well.
    • Be sure to ground the power supply is connected correctly.
    • Change the Power Cable
    • Install insulation on the motherboard (the motherboard circuits)

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