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Hello everyone, in this lesson we will talk about the diagnosis method

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and replacement method of desktop computer failures.

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The replacement method is relatively simple,

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which is to replace the suspected parts to test whether the fault disappears.

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For example, when a desktop computer has a blue screen of death failure,

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we suspect that the failure may be caused by memory

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Then just replace a memory directly, and then test

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If the fault disappears, it means that the fault is caused by the memory

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If the failure does not disappear, we will replace other parts to test

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Another example is the non-boot fault, when the minimum system method is tested,

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it is also non-boot, indicating that the fault exists in the components of the minimum system

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At this time, we will replace the components of the smallest system

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When the fault disappears after replacing a part, it means that the fault is caused by this part

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For board-level maintenance, just replace this part directly

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The replacement method is not only used for board-level maintenance,

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but in chip-level maintenance, the replacement method is often used to replace chips

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When repairing, the combination of replacement method and minimum system detection method

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can help us quickly locate the fault

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These two fault diagnosis methods are the most used and most efficient in maintenance