There are a lot of blue screens on computers, but the situation of black screens is not common. Many friends will feel helpless. What about black screens ? What are the reasons for the black screen of the computer? The following decoration home decoration network Xiaobian will analyze the reasons and processing methods of the computer black screen for your reference.
What should I do with a black screen on my computer?
Reasons for the black screen of the computer 1. Display failure: The black screen caused by the malfunction of the monitor itself, such as the power cord of the monitor, the poor contact of the power plug, the power switch is broken, and the internal circuit of the monitor is faulty.
Reasons for the black screen of the computer 2. Reasons for the signal line: The connection mode of the 15-pin D-shaped plug used by the display used by the machine. The 13th and 14th pins are the line sync signals. The display determines whether the two signals are present or not. Whether to open the filament and the high-voltage power supply path, and the two signals are used as the transmission signal of the display mode by the combination of the positive and negative polarity of the signal and the difference of the horizontal frequency. If the line signal is missing, then the monitor's power indicator is green, but no image is displayed; if it is completely missing, the monitor's power indicator is orange and no image is displayed. In this case, it is mainly checked whether the D-shaped plug of the display signal line has a broken needle, a broken needle or a short needle, and the inside of the signal line has a broken line. The solution is to replace the quality signal line. In the power management of the computer's CMOS settings, there is a "VideooffMethod" which includes "V/HSYNC+BLANK, BlankScreen, DPMS". The first one is to select the graphics card output line signal to control the display. Energy saving mode.
Reasons for the black screen of the computer 3. Video card failure: The most direct connection with the display is the graphics card. If the video card does not send a signal or there is a signal that cannot be sent out, the display will not light up. In actual use, the graphics card is not compatible with the motherboard, the signal output socket of the graphics card is not well connected or loose, and then the graphics card is damaged. The graphics card is not in good contact with the AGP slot of the motherboard, which will cause the display to be off. For the elimination of such faults, you need to be patient and carefully check the contact between the graphics card and the motherboard, and whether there is unstable contact. For incompatibilities, it can only be judged based on experience and information.
Reasons for the black screen of the computer 4. Power problem: The power supply is the power source for all the components of the computer. If it goes wrong, can other components work normally? Everyone knows that if there is a power failure, the host will have a short “beep†sound alarm and the display will not light up. However, there was also a time when there was an unsatisfactory check. It was actually a problem with the power supply.
Reasons for the black screen of the computer 5. Main reason: Mainly the CMOS setting error, set the first initialization graphics card to PCI or the onboard AGP graphics card, but the display is not connected to the corresponding position, the result is that the computer starts normally, but the display is not bright. In addition, it is the CPU, memory or graphics card, sound card, modem, network card conflicts, it will also cause the host does not start and cause the display black screen failure.
Reasons for the black screen of the computer 6. Software conflict: Because different application software is compiled by different companies, when they are installed together, it is possible to cause a black screen due to a conflict of address calls. The most typical feature of this kind of fault is that after installing a certain software, after the system prompts to restart, after the self-test screen is finished, only the cursor is flashing on the display screen, and then there is no movement. The solution to this type of problem is also very simple. Just remember what software was installed, press and hold the "Ctrl" key during startup, select the third item to enter the safe mode, and then uninstall the software you just installed.
Reasons for the black screen of the computer 7. Virus destruction: The virus is extremely destructive, especially with the advent of the Internet era, and more and more viruses are transmitted through the network. A virus that can cause a black screen on the display, such as a virus such as CIH. This kind of virus is extremely destructive, and directly rewrites the BIOS chip of the motherboard, causing the machine to not start at all, and does not self-test. If you don't have a tool like a programmer, your motherboard can only be scrapped. Sometimes it may be because the BIOS chip is broken by the virus, causing maintenance personnel to misjudge and delay many times.
The above is how the computer black screen brought to you by Xiaobian? What are the reasons for the black screen of the computer? I believe that everyone has a basic understanding of how to do a black screen on a computer after reading this article. If you want to know more about decoration consultation, please click to enter the decoration knowledge channel.
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