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PC problem

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PC problem

babwe90
My Computer goes off whenever you power it. What could be the cause? After booting for few seconds or minutes, it goes off entirely.
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    robo_dev

    Processor fan stopped, processor heatsink not attached, power supply faulty, motherboard faulty.

    Make sure no dust is blocking airflow.

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    Jacky Howe

    Power Supply
    A common problem is the System mysteriously shutting down, especially when playing games. This is often caused by the Power Supply being Overloaded, these safety measures ensure that it automatically shuts-down.
    Over-voltage Protection
    Short-circuit Protection
    No-load Operation
    Over-current Protection
    Over-temperature Protection (Optional) Not all PSU's support this feature

    If you are experiencing these problems you can test your PSU using the instructions below or purchase a more adequate Power Supply. Do a Google for Antec brand PSU's as they are by far the best quality.

    http://www.driverheaven.net/guides/testingPSU/

    http://www.ochardware.com/articles/psuvolt/psuvolt.html

    http://www.journeysystems.com/?powercalc

    Central Processing Unit
    Faulty Fans, Dust and Grime build up on the Heatsink restricting air flow. Remove the Power cable from the rear of the System and disconnect the Video cable. I would give the inside of the case a blowout with compressed air. When blowing air through the fans make sure that you physically stop them from spinning, as they may generate power and damage something. Use an Anti-Static Wrist Strap to ground yourself or by placing the back of your hand on the Power Supply Unit and not moving your feet. This will prevent electrostatic charge from building up and by not taking this precaution it is possible that you could inadvertantly cause damage to the PC from an electrostatic discharge.

    Then remove the Heatsink, giving it a thorough clean and reseat the CPU applying new CPU grease. If the Fans spin freely when you give them a spin they are probably OK. If there is resistance replace them.

    Clean the golden edge of each memory stick with a soft rubber/eraser, remembering not to touch the golden edge of the memory stick. Check with one stick at a time, remembering to disconnect the power from the PC.

    Also check Capacitors around the CPU for swelling or bulging.
    <br>
    As the capacitor ages, its capacitance decreases while its equivalent series resistance (ESR) increases. When this happens, the capacitors no longer adequately serve their purpose of filtering the direct current voltages on the motherboard, and system instability results. Some common symptoms are:

    * Not turning on all the time; having to hit reset or try turning the computer on again
    * Instabilities (hangs, BSODs, kernel panics, etc.), especially when symptoms get progressively more frequent over time
    * Vcore or other system voltages fluctuating or going out of range, possibly with an increase in CPU temperature as the core voltage rises
    * Memory errors, especially ones that get more frequent with time
    * Spontaneous reboots
    * In case of onboard video cards, unstable image in some video modes
    * Failing to complete the POST, or rebooting before it is completed
    * Never starting the POST; fans spin but the system appears dead

    <i>Keep us informed as to your progress if you require further assistance.</i>
    <HR>
    <i>If you think that any of the posts that have been made by all TechRepublic Members, have solved or contributed to solving the problem, please Mark them as <b>Helpful</b> so that others may benefit from the outcome. </i> :-bd

  • +
    0 Votes
    robo_dev

    Processor fan stopped, processor heatsink not attached, power supply faulty, motherboard faulty.

    Make sure no dust is blocking airflow.

    +
    0 Votes
    Jacky Howe

    Power Supply
    A common problem is the System mysteriously shutting down, especially when playing games. This is often caused by the Power Supply being Overloaded, these safety measures ensure that it automatically shuts-down.
    Over-voltage Protection
    Short-circuit Protection
    No-load Operation
    Over-current Protection
    Over-temperature Protection (Optional) Not all PSU's support this feature

    If you are experiencing these problems you can test your PSU using the instructions below or purchase a more adequate Power Supply. Do a Google for Antec brand PSU's as they are by far the best quality.

    http://www.driverheaven.net/guides/testingPSU/

    http://www.ochardware.com/articles/psuvolt/psuvolt.html

    http://www.journeysystems.com/?powercalc

    Central Processing Unit
    Faulty Fans, Dust and Grime build up on the Heatsink restricting air flow. Remove the Power cable from the rear of the System and disconnect the Video cable. I would give the inside of the case a blowout with compressed air. When blowing air through the fans make sure that you physically stop them from spinning, as they may generate power and damage something. Use an Anti-Static Wrist Strap to ground yourself or by placing the back of your hand on the Power Supply Unit and not moving your feet. This will prevent electrostatic charge from building up and by not taking this precaution it is possible that you could inadvertantly cause damage to the PC from an electrostatic discharge.

    Then remove the Heatsink, giving it a thorough clean and reseat the CPU applying new CPU grease. If the Fans spin freely when you give them a spin they are probably OK. If there is resistance replace them.

    Clean the golden edge of each memory stick with a soft rubber/eraser, remembering not to touch the golden edge of the memory stick. Check with one stick at a time, remembering to disconnect the power from the PC.

    Also check Capacitors around the CPU for swelling or bulging.
    <br>
    As the capacitor ages, its capacitance decreases while its equivalent series resistance (ESR) increases. When this happens, the capacitors no longer adequately serve their purpose of filtering the direct current voltages on the motherboard, and system instability results. Some common symptoms are:

    * Not turning on all the time; having to hit reset or try turning the computer on again
    * Instabilities (hangs, BSODs, kernel panics, etc.), especially when symptoms get progressively more frequent over time
    * Vcore or other system voltages fluctuating or going out of range, possibly with an increase in CPU temperature as the core voltage rises
    * Memory errors, especially ones that get more frequent with time
    * Spontaneous reboots
    * In case of onboard video cards, unstable image in some video modes
    * Failing to complete the POST, or rebooting before it is completed
    * Never starting the POST; fans spin but the system appears dead

    <i>Keep us informed as to your progress if you require further assistance.</i>
    <HR>
    <i>If you think that any of the posts that have been made by all TechRepublic Members, have solved or contributed to solving the problem, please Mark them as <b>Helpful</b> so that others may benefit from the outcome. </i> :-bd