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Hello, it is recommended to clean the computer thoroughly and replace the motherboard battery.
The sound of the computer host is due to the formation of an oxide layer on the surface of the gold finger of the memory or independent graphics card, resulting in poor contact between the memory and the memory slot, and the poor contact between the graphics card and the graphics card slot, causing a black screen and a dripping sound.
In general, it is common for the host computer to have a power supply problem. However, sometimes when the output voltage of the power supply is low, the host does not alarm, but the hard disk is lost, the reading performance of the optical drive is poor, and it often crashes.
When these situations occur, it is best to check whether the output of each voltage is low, when +5V and +12V are less than 10%, the above problems will occur from time to time. Because the power supply has a voltage output, it is often mistaken for a problem with the motherboard or the hard disk, and a lot of time is wasted.
When the DC component is reduced, the high-frequency AC component in the power supply increases, which will interfere with the normal operation of the motherboard, resulting in system instability, and it is easy to crash or blue screen.
Extended information: During the use of the notebook, the screen is dimmed, or there is a blurred screen, blue screen, etc., and other situations often occur: if the screen is displayed as a "blurred screen" when booted, and the external monitor can be displayed normally, it may be that the LCD screen, screen cable, graphics card, motherboard and other components are faulty; If the external monitor cannot be displayed properly, the possible faulty parts are the notebook's motherboard, graphics card, memory, etc.
If there are related faults such as white screen and green screen from time to time during the operation of the laptop, it is likely to be caused by factors related to the compatibility of the graphics card driver. The "blue screen" is often caused by software problems or overheating of the system.
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It is possible that the BI0S setting problem causes the notebook to beep for a long time, it is recommended to enter the BIOS, restore the BIOS to factory value first, and then set the boot items. Generally, it is normal.
At the same time, open the back of the notebook, there is a memory module, erase it with an eraser, and plug it back in.
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Most of the beeping sounds are caused by the failure of the delet key to be compressed, and the upturned key with a flat screwdriver solves the most annoying and headache problems. This is a secret that many technicians are reluctant to reveal. If this trick doesn't work, confirm that it is a problem with the keyboard, and you can find a technician to change the keyboard.
The computer will self-test if it doesn't pass, and the following is detailed. >>>More
Laptop fan buzzing, generally speaking, this situation occurs, dust, foreign objects are the main cause, disassemble to clean up dust. It may also be caused by the aging of the material, so consider replacing the parts. >>>More
First soft and then hard, to see if it is caused by a conflict between the graphics card driver or software. >>>More
0 reason 1: the wireless network switch on the notebook is not turned on, some laptops are equipped with wireless network switches on the body, and some laptops need to press and hold the key combination on the keyboard to turn on the wireless network function, and the user can read the manual carefully.
The keyboard can't type how to log in.
The computer keyboard input does not respond, see if the number keys are locked. If all the keys can't be clicked, it's generally a system problem, and there is a problem with the driver. >>>More