Causes of black screen

Currently, there are two main causes of computer black screens: hardware faults and software conflicts. The main difference between the two lies in the location of the black screen, that is, black screen at startup, after the machine is started normally, a black screen is displayed during use.

 

Of course, no matter whether it is a hardware fault or a software problem, it is not isolated in a sense. Try to solve the problem following the following ideas. I believe that the black screen will be quickly and properly solved.

 

Black screen hard Injury

 

When a "black screen" suddenly appears after the boot, the reader should first check whether the PC speaker in the computer has an alarm. If the PC speaker sends an alarm, we can preliminarily determine the hardware location where the problem may occur based on the sound length. For example, if the alarm sound of a PC speaker is four minutes long when the computer starts up, you can easily identify the problem on the display card based on the prompt. In this case, you can open the chassis and check whether your display card is firmly inserted. If it feels a little loose, unplug the display card and re-insert it, plug it tightly, and fix it with screws.

 

If the plug-in problem is ruled out, the plug-in card slot is also relatively strong, you can pull the display card out and try another slot on the motherboard. If your display card does not belong to PCI but is a new type of AGP slot board, and there is only one AGP slot on the computer motherboard, you can try it again with an AGP slot on the motherboard, eliminate physical faults of the display card. If the display card plug-in is tight and physical faults are eliminated, there may be problems with the display card's "golden finger" in normal contact. In this case, you can unplug the display card and then find a clean eraser to wipe it back and forth, this kind of poor contact problems with the "Golden finger" are mostly caused by dirty things.

 

When the computer is started, the sound of the PC horn alarm is not a long four short, but a short scream, and a black screen also occurs, then, we can roughly determine whether there are problems with the contact in your computer. The solution for poor contact is basically the same as that for the display card, that is, to pull them out and re-insert them. Be sure to pin them to the end when inserting them, And fasten the cards on both sides of the memory slot.

 

Some SDRAM slots on the motherboard are troublesome, because most of the slots on these boards are very tight. If you encounter this situation, you must never use them hard, you can use your fingers to hold the lower part of the SDRAM slot on the motherboard, and press the memory on your thumb. When you hear a slight sound, it turns out that the memory has been bottomed out. You can use the card to fix the memory.

 

There are also some black screen phenomena that the computer will not trigger an alarm. In this case, the simplest thing is to analyze the specific problem according to the "arrange it" method in mathematics. First check whether there is a problem with the Power wiring board, remove the relevant components of the computer, replace with other available equipment to check whether the power wiring board works normally. If the power supply board is not faulty, check whether the connection between the computer power source and the motherboard is normal according to the normal program. That is to say, check whether the power supply of the motherboard is normal.

 

If there is no connection error in the plug-in, check whether the power supply is burned. If the power supply is burned, the fan will be stopped. Some early computer chassis power supply may often be insufficient, If you suspect this is the case, please unplug all the hard drive, optical drive, soft drive power cord, restart the computer and check whether the problem is solved after the power consumption rate is greatly reduced. If the problem persists, eliminate the accidental damage to the BIOS of the motherboard by viruses such as CIH, and check whether the motherboard has poor contact or short circuit.

 

In addition to the above, as the clock speed of the CPU continues to increase, the power supply plays an increasingly important role in the entire PC power system. Some people describe the CPU as the heart of a computer. For a long time, we may be too concerned about whether the heart is healthy and powerful, but ignore the power of the chassis that can provide power and energy for the heart. However, due to insufficient power supply, the computer may be exposed to black screens. The symptom is that after the power is turned on, the power fan of the chassis can be started normally, and no system error "Didi" is reported, but the machine does not work, and there is no self-check process, and the display is black. If the Board and memory are re-plugged after the power supply is cut off, and all boards or components are confirmed not to be loose, most of them are caused by insufficient power supply.

 

I strongly recommend that you do not neglect the chassis and power supply when purchasing a computer for the sake of your computer's health. Buying a power supply with a rated power above 250 watts is a kind of care for your machine. It is worth noting that many power supplies with a rated power of W in the market do not actually meet the requirement, which leads to another suggestion, when buying power supplies, try to take care of brand names. This is a powerful guarantee for your machine security. If you have installed many peripherals on your machine, such as dual hard disk, Dual CPU, Dual Optical Drive, scsicard, or something else, you 'd better find a higher power (300 ~ 400 watt) or server power supply. For those P4, Thunderbird, and geforc4's users, the power supply must be over 300 watts. Otherwise, more troublesome things than the black screen will emerge.

 

Poor black screen Software

 

Of course, most of the causes of black screens are caused by hard injuries on the PC, but this is not the case. Soft Damage may sometimes make it easier to blind the user. When we use computers, some black screens may also be soft failures that occur after WINDOWS 98, WINME, WIN2000, or even WINXP systems are entered. (However, I have not found a black screen fault in WINDOWS XP, however, since there is no final conclusion, we have the right to consider it as well ).

 

If the user finds that after the machine assembly is complete, there are always some inexplicable problems during the installation of software such as the operating system, or even black screen crashes. Here we need to eliminate the cause of the virus, because although there are many cases of black screens caused by virus, the solution is the only one, that is, virus killing. There is nothing to say. On the contrary, we should pay more attention to program errors or black screens during operation. The most obvious here is the program running failure caused by hardware driver problems. This type of problem frequently occurs on third-party boards, such as 3D acceleration display cards, PCI sound cards, network cards, scsicards, and raid cards, this type of problem is the most common and most obvious manifestation, that is, the black screen is caused by frequent crashes during applications, game software, and other running processes.

 

For example, when playing underground city guardian II, S3's diamond Viper 770/geforce 2pro accelerated display card is often rejected by the game (unrecognized display card ), even the game will abandon hardware acceleration and switch to software effects. The reason for this problem is mainly because the game source program ignores the power of the standard 3D acceleration chip or a higher-end, newer, non-mainstream 3D acceleration chip when writing, therefore, the game itself is not ideal in terms of hardware support, but also affects the performance of the product. In addition, due to conflicts between drivers and system applications, such as PCI sound cards and PCI NICs, black screens or restarts During machine running, to solve this problem, you can install the updated driver.