computer no reason black screen
[Cause analysis]:
Computer black screen is a relatively easy phenomenon, especially in Some older computers or
assembled computers
. There are many reasons for the failure of the computer black screen, such as display
damage, the motherboard
is damaged, the graphics card
is damaged, graphic card
contact is bad, Power
Damaged, cpu
damaged, parts temperature is too high, etc.
[Solutions]:
1. (1) If the mouse keyboard light is not on, you can turn off the power cord of the main unit after powering off, press the power switch on the main unit by hand for 10 times, and release the static electricity test. If you have experience in opening the chassis and re-plugging the memory module, this problem can basically be determined as a problem with the motherboard and memory, especially the brand machine; the motherboard and the memory do not have a normal self-test, and usually can be re-plugged and removed, but If this problem occurs frequently and repeatedly, it is recommended to contact the service point or after-sales service.
(2) If the mouse keyboard light is on, you can plug in the monitor data cable and the power cable for troubleshooting. If there is a system sound, the monitor does not display, you can also use the replacement method (display connection Test to other hosts), it is not excluded that the display is faulty. First check the display interface and the display cable that connects the display card after the chassis is ready.
2. It is recommended that you contact the after-sales or computer repair area for testing, or you can select nearby merchants to handle the situation in 360 manual services.
Check the drive and data cable for looseness, and check if the graphics card is loose.
, should be hardware
It should be activated without getting it, download pony activation to activate
The power cable of the monitor is likely to be connected to the power cable behind the monitor.
First determine if the connection is normal. The monitor is damaged, the motherboard is damaged, the graphics card is damaged, the graphics card is not well connected, the power supply is damaged, and the CPU is damaged. The temperature of the parts is too high.
There are two reasons for the black screen, one is the reason for the hardware, and the other is the reason for the software. The following is a simple analysis of the reasons:
First, the cause of the virus
Second, the hardware problem: such as power
Third, the software problem: such as CPU temperature monitoring software
Fourth, the system file is missing, wrong
5, hacker attack
The specific solution is to redo the system, you can exclude items 1, 3, 4, 5, if it is still dead, it is a hardware problem.
Professional judgment processing method:
Hardware reasons:
First, poor heat dissipation: display, power supply and CPU are very hot in the work, so good ventilation is very important, if the monitor is overheated Causes color and image distortion to shorten the life of the display. Too long working hours can also cause the power supply or display to cool down and cause a crash. The heat dissipation of the CPU is an important issue related to the stability of the computer operation, and is also the hardest hit area where the heat failure occurs.
Second, the dust killer: too much dust inside the machine will also cause a crash. If the floppy drive head or the optical drive laser head is contaminated with too much dust, it will cause reading and writing errors, which will cause the computer to crash.
Third, the memory module failure: mainly due to loose memory, its quality. The memory module contact fault should be eliminated according to the specific situation. If there is a problem with the quality of the memory module, the memory needs to be replaced to solve the problem.
Fourth, the hard disk failure: mainly the hard disk aging or due to improper use of bad sectors, bad sectors. This makes it easy for the machine to crash when it is running. You can use professional tool software to perform troubleshooting. If the damage is serious, you can only replace the hard disk.
Five, hardware resource conflict: due to conflicts between the sound card and the graphics card settings, causing an exception error. In addition, conflicts in other devices' interrupts, DMAs, or ports can cause a few drivers to generate an exception, causing a crash. The solution is to start in "safe mode" and make appropriate adjustments in "Control Panel" - "System" - "Device Management". For the case of abnormal errors in the driver, you can modify the registry: "Run" - type "REGEDIL", enter the registry editor, find and delete the prefix substring by the "find" function under the menu All "primary keys" and "key values" are restarted.
Six, inferior parts: poor quality boards, memory, motherboard and polished CPU, memory.
Seven, motherboard capacitor: other hardware is good, but no problems have been found, it may be that the motherboard capacitor is broken.
Eight, improper movement: the internal components of the machine are loose during the movement, resulting in poor contact.
Nine, the device does not match: If the motherboard main frequency and CPU frequency do not match, the old motherboard overclocking will be rated too high, may not guarantee the stability of the operation, frequent crashes.
10. Insufficient memory capacity: The larger the memory capacity, the better. It should be no less than 0.5% to 1% of the hard disk capacity. If there is such a problem, you should replace the memory with the largest possible capacity.
Software reasons:
First, the virus infection: the virus can make the computer work efficiency drop sharply, causing frequent crashes. Such faults can be comprehensively checked and disinfected by running antivirus software
, and the antivirus software
is upgraded in time.
Second, the system file is accidentally deleted: you need to restart the system with the system disk or reinstall the system disk.
Third, the hard disk has too little space or too much debris: Because some applications need a lot of memory to run, if the remaining space of the hard disk is too small to meet the needs of the software, it is easy to cause a crash. The solution is to rationalize the partition space, use the Disk Defragmenter to regularly defragment the hard drive and clean up the junk files on the hard drive. Tool files such as "Super Rabbit" can be used to delete unwanted files.
Fourth, the abuse of the test version of the software: the beta version of the software usually has some aspects of instability, after use, there will be data loss program error prompts, crashes or the system can not start.
Five, illegal uninstall software: If you do not uninstall the software, directly delete the software installation directory, you will not be able to clear the corresponding connection file in the registry and WINDOWS directory, causing the system to become unstable and cause crashes. To remove unwanted applications, use the uninstaller provided by the software. It is best to run the Add/Remove Programs in Control Panel to completely remove the software from the system.
Sixth, use pirated software: pirated software may hide the virus, once executed will automatically modify the system, so that the system crashes during operation.
Seven, too many programs to start: due to running too many programs, the system resources are tight, the data required by individual programs can not be found in memory or virtual memory, there will be abnormal errors.
Eight, illegal operation: illegally open or release the relevant program with illegal formats or parameters, it will also cause the computer to crash.
Nine, abnormally shut down the computer: Do not use the chassis power button to force shutdown, this will easily cause file damage or loss, causing automatic start or crash when running.
10. Memory conflict: Sometimes it is normal to run all kinds of software, but it suddenly crashes. It is normal to restart these applications. This is a fake crash phenomenon.
Reinstalling the graphics driver
The possibility of software failure is greater .
It may be a graphics card problem