What Is the Black Screen of Death?

Computer black screen is one of the common failures in computers.

Black screen failure

In general, the most likely reason is that the display signal cable or power cable is not connected properly, the brightness contrast knob is accidentally "turned off", the hard disk signal cable is plugged in reverse or only a row of pinholes, or it may be metallic. A local short circuit caused by falling on the motherboard, or the memory module is not plugged in. In short, remove the case, clean it up, pull out those cables and plug it in again. Pay attention to inserting it a bit, especially the memory, which is more common. Here in memory.

Of course, whether it is a hardware failure or a software problem, it is not isolated in a certain sense. Try to solve it in accordance with the following ideas. I believe that the black screen will be properly resolved soon.

Black screen failure

When a black screen suddenly appears after the computer is turned on, the reader should first pay attention to whether there is an alarm sound from the PC speakers in the computer. If the PC speaker emits an alarm sound, then we can make a preliminary determination of the hardware parts that may have problems based on the length of the sound. For example, if the PC horn alarm sound is one long and four short when the computer is turned on, then according to this prompt, it can be easily determined that the problem occurred on the display card. If so, readers can open the case and see if their graphics card is firmly inserted. If it feels loose, please pull out the graphics card, re-insert it, tighten it, and fix it with screws.

If the problem of the insertion method is ruled out, and the card slot is relatively firm, you can pull out the display card and then try another slot on the motherboard. If the user s graphics card is not a PCI but a new AGP slot board, and the computer motherboard has only one AGP slot, you can try another AGP slot on the motherboard to troubleshoot the physical problems of the graphics card. If the display card is inserted tightly and the physical fault is ruled out, there is another possibility that the "golden finger" of the display card has a problem in normal contact. If this is the case, you can pull out the graphics card again, and then find a clean eraser and wipe it back and forth on the "golden finger", because the poor contact of this "golden finger" is mostly due to the sticking on it Caused by some dirty things.

If the alarm sound of the PC horn is not a long, short, short, but a short call, and a black screen appears when the computer is turned on, then according to the phenomenon, you can roughly judge that there is a problem with the memory of your computer. The solution to poor contact is basically the same as that of the graphics card, that is, pull them out and then re-insert them. Be sure to insert them all the way when inserting them, and lock the clips on both sides of the memory slot.

The SDRAM slots on some motherboards are more troublesome, because the slots on these motherboards are very tight. If you encounter this situation, you must not use force, you can use your fingers to support the bottom of the motherboard SDRAM slots. Then use your thumb to press down on the memory. After hearing a slight sound, it proves that the memory has reached the bottom. Finally, you can fix the memory with a clip.

There are also some black screen phenomena. The computer will not alarm. At this time, the simplest is to analyze the specific problem according to the mathematical "exclusion method". First check whether there is any problem with the power wiring board, remove the relevant supporting parts of the computer, and replace it with other equipment that can be used to check whether the power wiring board is working properly. If the power terminal board is not faulty, then check whether the connection between the computer power supply and the motherboard is normal according to normal procedures, that is, check whether the power supply of the motherboard is normal.

If the socket is not connected incorrectly, you should check whether the power is burned. If the power is burned, the power fan will also stop. Some early computer case power supplies often have insufficient power supply. If you suspect that this is the problem, ask users to unplug the power cords of all hard disks, optical drives, and floppy drives, and then restart the computer. After the power consumption rate is greatly reduced, To see if this situation is resolved. If the problem still cannot be solved, please rule out that the motherboard BIOS has been accidentally damaged by a virus such as CIH, and whether the motherboard has a bad welding contact or short circuit.

In addition to the above, with the increasing speed of the CPU's main frequency, the role of the power supply to the entire PC power system is becoming more and more important. Some people describe the CPU as the heart of a computer. For a long time, we have been too concerned about whether the heart is healthy and strong, but we have ignored the power supply of the chassis that can provide power and energy for the heart. And because the power of the power is insufficient, it may also cause a black screen of the computer. The symptom is that you can hear that the power fan of the chassis starts normally after you turn on the computer, and you don't hear the "didi" sound of the system error. If the board and memory are re-plugged after the power is cut off, and it is confirmed that all boards or components are not loose, it is mostly caused by insufficient power of the power supply.

The author strongly builds. For your health, please don't neglect the case and power supply when buying a computer. Buying a power supply with a rated power above 250 watts is a kind of care for your machine. There is one more point to note here. Currently, many power supplies on the market that have a rated power of 250W actually cannot meet the requirements. This leads us to another suggestion. When buying power supplies, try to take care of famous brands. This time is a strong guarantee for the safety of your machine. If you have more peripherals installed on your machine, such as dual hard disks, dual CPUs, dual optical drives, SCSI cards or whatever, it is best to find a more powerful (300-400 watts) or server power supply. As for users of P4, Thunderbird, GeForce3, they must use more than 300 watts of power, otherwise, more trouble than black screen will emerge.

Black screen failure

Of course, most of the black screens are caused by hard injuries on the PC, but this is not absolutely true. Soft injuries may sometimes be more likely to blind users. In the process of using our computer, some black screens may be caused by soft failures after entering WINDOWS 98 / WINME / WIN2000 or even WINXP systems (but I have not found any black screen failures in WINDOWS XP, but since there is no conclusion , We have the right and think it also has it).

If the user finds that after the machine is assembled, there are always some inexplicable problems during the installation of the operating system and other software, and even a black screen of death suddenly appears. Here we need to rule out the cause of the virus. Although there are many black screens caused by viruses during system operation, the only solution is to kill the virus. There is nothing more to say. On the contrary, due to the error or black screen of the program in operation, we should pay more attention to it. The most obvious thing here is the failure of the program caused by the driver problem of the hardware. This kind of problem frequently occurs on some 3D accelerated graphics cards, PCI sound cards, network cards, SCSI cards, RAID cards and other third-party boards. The most common and most obvious manifestation of such problems is in applications, game software, etc. Frequent crashes during operation cause black screen.