Laptop computers will inevitably encounter various failures in daily use, and these failures will seriously affect our daily work and study. PHP editor Zimo brings you a guide on the causes and solutions of common laptop failures to help you quickly and accurately solve the problems and restore your laptop to normal operation. Please continue reading below to learn about the causes of common failures and their corresponding solutions.
As an indispensable tool in modern life, laptop computers will inevitably encounter various problems in daily use. Such questions. This article will summarize some common causes and solutions for laptop computer failures, hoping to help you better solve your problems.
Possible reasons:
Power problem: Check whether the power plug and socket are connected properly; Hardware failure: There may be a problem with the motherboard, battery or other hardware; Operating system failure: The system file is damaged and the computer Unable to start normally.Solution: Check whether the power connection is normal; try to replace the battery; try to enter safe mode to repair system files.
Possible reasons:
Software problems: too many system startup items, software conflicts, etc.; Aging hardware: aging hard disk or insufficient memory; Virus infection: viruses or malware cause the system to be overburdened.Solution: Clean up system junk; close unnecessary startup items; update hardware or increase memory capacity; install anti-virus software for a full scan.
Possible reasons:
Screen failure: There is a problem with the LCD screen or monitor interface; Graphics card problem: Graphics card driver failure or hardware failure; System setting problem: The resolution or display mode is set incorrectly.Solution: Check whether the screen cable is loose; update the graphics card driver; adjust display settings.
Possible reasons:
Dust blockage: excessive dust accumulation in the heat sink; Fan failure: The cooling fan works abnormally; High load operation: Running large programs for a long time results in insufficient heat dissipation.Solution: Clean the heat dissipation vents and cooling fans; avoid placing the computer on soft beds and other surfaces that are difficult to dissipate heat; reduce the load when running large programs.
I hope the above content can help you better understand common laptop faults and quickly find solutions when you encounter problems. Thank you for reading this article!
Common faults and causes are as follows
1. The welding machine has no welding current output 1. Cause of the fault: There is no voltage input at the input end of the welding machine; the internal wiring falls off or is broken; the internal coil is burned out.
2. The current of the welding machine is too small or the arc is difficult to strike 1. Cause of failure: The grid voltage is too low; the cross-sectional area of the power input line is too small (high resistance, high voltage loss); the welding cable is too long or the cross-sectional area is too small; the workpiece There is paint and other dirt on the welding machine; the output cable of the welding machine is in poor contact with the workpiece, and the current regulator is partially loose.
3. The welding machine is overheated, smoking or burnt
Common causes of hydraulic system failures include: oil leakage, insufficient pressure, leakage, overheating, etc. Oil leakage is one of the common failures of hydraulic systems, usually caused by aging or damage to seals. Insufficient pressure may be caused by insufficient output flow of the pump or a transmission ratio that is too high. Leakage is caused by loose pipe connections, damaged seals, or the presence of air in the oil circuit. Overheating may be caused by insufficient hydraulic oil, poor heat dissipation, or excessive ambient temperature of the system. Therefore, the maintenance and upkeep of the hydraulic system is very important. It is necessary to check and replace seals in time, ensure that the pipeline connections are firm, clean the oil lines regularly and add new oil, and enhance heat dissipation.
The following situations may occur. The optometrist may malfunction. Domestic optometrists are very poor and often have problems. There may also be problems with your refractive medium, such as corneal stains, lens turbidity, vitreous turbidity, etc. It is recommended that you go to the hospital for optometry in the future. In this case, you can do retinoscopy. Non-professional optometrists basically cannot master this technology. Moreover, hospital optometry is not expensive. After the optometry, you can go to an ordinary optical shop to get glasses. If the hospital can't test it, then you have to see an ophthalmologist.
1. No cooling
Whether the power plug of the refrigerator is plugged in; whether the power socket has power; and whether the power circuit breaker is disconnected. Check whether the refrigerator door light is on to determine whether the refrigerator is connected to power. Check whether the thermostat is in the working gear. The thermostat has a stop gear (0 gear). The compressor will not work if it is placed in the stop gear. If the above items are normal, please contact maintenance personnel to solve the problem.
2. Improper door body
In this case, just adjust the door hinge to straighten the door. Loosen the lower hinge screws of the refrigerator, adjust the door position, and then tighten the screws. Loosen the middle hinge screw of the refrigerator, move the door left and right, and tighten the screw after adjustment.
3. The lighting does not light up
If the light bulb is broken, just replace it. In addition, the door light switch has a mechanical failure that does not spring up and cannot be turned on. It can be restored by gently pulling it with your hand. The fault caused by the burrs blocking the edge of the button on the door light switch can be eliminated by scraping off the edge burrs with a small blade. The door light switch of the refrigerator is activated by a small pressing piece, which requires removing the plastic cover. After taking out the pressing piece and the door light switch, first snap the pressing piece into place, then install the door light switch. Once the plastic cover is installed, the fault will be eliminated.
Common faults include the following:
1. The computer board cannot start or a black screen appears when booting. This is usually caused by bad memory modules, hard drive failure, motherboard damage, etc. You can try to re-insert and unplug the memory module, replace the hard drive or check whether there is a problem with the motherboard.
2. Blue Screen of Death. Blue Screen of Death may be caused by software issues, hardware damage, driver incompatibility, etc. You can try to fix the problem by repairing the system, updating drivers, or replacing hardware.
3. The computer is running slowly. It may be caused by computer viruses, insufficient memory, application conflicts, etc. You can try to use anti-virus software to clean viruses, increase memory, close non-essential applications, etc. to solve the problem.
4. The computer board makes abnormal noises. It may be caused by power failure, fan failure, etc. You can try replacing the power supply or fan to solve the problem.
5. The USB interface cannot be recognized. It may be caused by USB driver issues or unstable power output voltage. You can try updating the USB driver, replacing the power supply, etc. to solve the problem.
These are common faults of Fox computer boards. If you encounter these problems, you can troubleshoot and solve them according to the above methods. If it cannot be repaired by yourself, it is recommended to contact professional maintenance personnel.
Computer power failure generally has the following phenomena:
Fault 1. There is power output but no display when turned on
Fault phenomenon: There is power output in the computer, but no display when turned on.
Analysis and solution: The possible reason for this failure is that the delay time of the RESET signal input by POWERGOOD is not enough, or POWERGOOD has no output. After starting up, use a voltmeter to measure the output terminal of POWERGOOD. If there is no +5V output, check the delay element again. If the device has +5V, just replace the delay capacitor of the delay circuit.
Fault 2. It will automatically restart every time it is turned on
Fault phenomenon: The computer will automatically restart once every time it is turned on, but now it needs to repeat the self-test before entering the operating system.
Analysis and solution: Rebooting at startup is usually caused by a motherboard failure. Unstable power output may also cause this. Check these two devices.
Fault 3. There is a ignition in the case and the indicator light of the monitor power supply flashes at the same time.
Fault phenomenon: There is a ignition in the case and the indicator light of the monitor power supply flashes.
Analysis and solution: It is very likely that it is a problem with the power supply, because it is difficult for other accessories in the chassis to cause this problem. This means that the components inside the power supply are damaged or short-circuited, so go to a professional for repair or repair. Replace the power supply with a new one.
Fault 4. The computer will automatically shut down after only a few minutes of booting.
Fault phenomenon: The computer is configured with PENTUM3 700, MSI motherboard, modern 128MB, and MAZTOR hard drive. Recently, the computer will automatically shut down after only a few minutes of booting. The indicator lights on the host, optical drive and monitor are all on and the fan is running, but there is no response. Only by turning off the power and restarting can it work normally.
Analysis and solution: After the power supply has been working for a period of time, the heat will become larger, and some components will work unstable, causing the output current to be cut off, so the power supply needs to be inspected.
Fault 5. The host power is automatically turned on when the power switch is turned on
Fault phenomenon: The computer boot sequence is reversed. Normally, the monitor and host should be started manually one by one, but the host power is automatically turned on when the power switch is turned on. .
Analysis and solution: It is very likely that the problem is caused by the settings in the BIOS. In this way, first enter the BIOS of the motherboard to set up, and listen to the PWERON AFRER POWERFALL option function in POSERMANAGERMENT and turn it off.
Fault 6. You need to remove the power plug and plug it in before restarting
Fault phenomenon: In offline state, when checking QQ messages and letters in FOXMAIL, the computer will suddenly shut down. At this time, the computer will shut down suddenly. There is no response from the power switch. And be sure to remove the power plug and plug it in again before restarting.
Analysis and solution: It is likely that there is a problem with the automatic protection circuit of the power supply. Check whether the mains power is stable. In addition, you can use another power supply first to see if it is caused by the power supply itself.
Fault 7. Restart during shutdown
Fault phenomenon: Recently, every time the shutdown is in progress, the screen will show that it is shutting down, and then it will automatically restart. In addition, sometimes it will automatically restart as soon as you enter WINDOWS98 after turning on the computer.
Analysis and solution: This is due to a bug in the energy control function of WINDOWS98. If so, you need to install the relevant shutdown patch of WINDOWS98 to solve this problem. If you restart just after entering WINDOWS98, the motherboard is faulty or It is caused by improper current output of the power supply. You can turn off the advanced management of the power supply in the WINDOWS system control panel.
The following are some common causes of EVA injection machine failures:
1. Increased friction between the screw and barrel wall: This may be caused by wear, impurities or improper lubrication of the screw or barrel wall. This can make it difficult for the screw to move in the cylinder, or even get stuck.
2. Improper temperature control: The temperature control of the screw and barrel wall is crucial for the flow and plasticization of plastics. If the temperature setting is incorrect, the viscosity of the plastic melt may be too high or too low, affecting the quality of injection molding.
3. Hopper blocked: The hopper blocked by plastic particles will hinder the supply of plastic in the hopper. This may be caused by excessive raw material moisture, excessively large particles, or poor hopper design.
4. Screw retraction is not smooth: When the screw retracts, the plastic should flow smoothly. If the screw does not retract smoothly, it may be caused by impurities, wear, poor lubrication, or the screw retracts too quickly.
5. Insufficient injection pressure: During the injection molding process, sufficient injection pressure is needed to push the melt into the mold. If the injection pressure is insufficient, the product surface may not be full or the mold may not be completely filled.
6. Poor mold temperature control: Mold temperature control is the key to ensuring product dimensional accuracy and perfect appearance. Improper mold temperature may cause product shrinkage, deformation or surface quality problems.
7. Hydraulic system failure: The hydraulic system of the EVA injection machine is responsible for driving the screw and opening and closing of the mold. If the hydraulic system fails, it may result in unstable operation or delayed action.
The above is the detailed content of Common causes and solutions of laptop computer failures. For more information, please follow other related articles on the PHP Chinese website!
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
