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There are ten kinds of computer troubleshooting methods: observation method, minimum system method, gradual addition and removal method, isolation method, replacement method, comparison method, heating and cooling method, detonation method, plug and unplug method, and cleaning method. . Some common computer glitches can be easily fixed with these methods.

1. Observation Method

The observation method is to check for typical or obvious faults by looking, listening, smelling, touching, etc. For example, observe for sparks inside computer, abnormal sound, loose plugs, damaged cables, broken wires, or touching wires, Are there hot, burnt or damaged components on board, broken contacts, poor contact and poor soldering. For some short-term failures that appear and disappear from time to time, in addition to direct observation, you can also tap on relevant components with a rubber mallet to see any changes in failure phenomenon to determine location of failure.

Second, minimal system method

The minimum system method is to disable suspected faulty board and hardware, and assess and isolate fault based on previous and subsequent computer performance. The main requirements for connecting and disconnecting boards and devices are to maintain minimum system configuration to operate in order to reduce scale of failure. Usually, only motherboard, memory, processor, and power supply are installed first, and then system is turned on to check. If everything is OK, then add a keyboard, video card, and monitor. If this is normal, then install a hard drive, expansion card, etc. The procedure for disconnecting boards and devices is exactly opposite. The disconnected board and device connection plug should also be cleaned to eliminate faults caused by poor connection.

The minimal system system is divided into 3 categories as follows:

1. Startup type (power supply + motherboard + CPU).

2. Backlight type (power supply + motherboard + processor + memory + video card + display).

3. Enter type of system (power supply + motherboard + processor + memory + video card + monitor + hard drive + keyboard). At moment it is actually a full-fledged computer, but an optical drive, printer, TV card, mouse, network card, camera, pen Not right now.

3. Gradually add and remove methods

The incremental addition method is based on minimal system method. Only one component/hardware or software is added to system each time to check if fault phenomenon disappears or changes in order to identify and locate fault.

Note: The incremental add and remove method usually needs to be combined with replace method in order to more accurately locate fault.

Fourthly, isolation method

The isolation method is an evaluation method for protecting hardware or software that may interfere with evaluation of a fault. It can be used to isolate suspected conflicting hardware and software to determine if problem has changed.

Software and hardware shielding, as mentioned above, for software means launching or uninstalling it, for hardware it means disabling device, removing driver, or simply removing it from system in Device Manager.

5. Replacement Method

The replacement method means replacing a potentially defective computer part with a computer part with same specification. If after replacement malfunction is eliminated, then cause of malfunction is in replaced part.

Note. Before replacement, you must first make sure that replacement parts must be in good condition and can be used normally.

6. Comparative Method

The compare method is similar to replace method. Use correct part to compare appearance, configuration, and performance of suspect part. You can also compare two computers to determine environment settings of failed computer. Difference in hardware configuration, find out location of fault from page.

Seven, heating and cooling method

During door-to-door service, due to limited tools, you may use a heating and cooling method that is different from service method. Heating method for door-to-door service You can try to reduce ventilation capacity of computer with consent of user. Increase computer's own heat dissipation for heating.

The cooling method is usually implemented using following methods.

1. Generally choose a time when ambient temperature is cooler, such as early in morning or late.

2. OstaUpdate your computer for more than 12-24 hours.

3. Blow faulty machine with an electric fan.

8. Impact Method

The shock method is usually used when there is a suspicion of poor contact of a certain computer component. Vibration, appropriate twisting or hitting with a rubber mallet on a component or a specific part of device can reproduce malfunction, thereby determining location of malfunction and method of maintenance.

Nine, connection method

The plug-in method is to find cause of failure by inserting or removing a plug-in or chip. Although this method is simple, it is very effective and is often used. If computer "freezes" at some point, it is difficult to determine cause of failure. Theoretically, it is difficult, and sometimes impossible, to analyze cause of failure. You can quickly find cause of failure using plugin method. Pull plugins one by one and check current state of your computer every time you pull one. Once a plug-in is pulled out and computer is working normally, then cause of malfunction lies in this plug-in.

10. Cleaning method

Some computer failures are often caused by a lot of dust in car. This requires that during maintenance process, pay attention to whether there is a lot of dust inside and outside faulty machine. If so, it should be removed first, and then a decision should be made and maintenance carried out.