My computer suddenly flashed black screen, and it was all right away, what s going on?

1.The monitor's line contact is poor.

2.There is a problem with the graphics card.

3.The voltage is unstable.

If it doesn't show up, don't worry.

Is there a lack of power, or someone has tripped over a wire or something?

It's a problem with your computer hardware, it may be a problem with the picture tube, or it may be a problem with your unstable interface.

Take it and fix it! That's it.

People are professionals.

You go and ask them.

1.Poisoning. 2.The memory module is broken.

Is there a beeping sound?

1. Whether the computer monitor and the host are normally connected to the power supply, and whether the power indicator is on. 2. If it is a notebook to check the power indicator of the computer, if it is not lit and the computer is connected correctly, it is very likely that there is a problem with the motherboard, please send it to the warranty point for repair in time.

The computer screen flashes every once in a while, and the screen may be caused by the reason of teasing the brother:

Power settings issues: Check your power management settings to make sure your computer isn't set to automatically go to sleep or screen off mode after a while. You can adjust accordingly in the power options.

Graphics driver issues: Outdated or unstable graphics drivers can cause the screen to flicker or go black. Attempting to update your graphics card drivers to the latest version can be done by visiting the graphics card manufacturer's official ** or by using the driver update tool. Defeat.

Display setting issues: Incorrect display settings or refresh rate settings can cause the screen to flicker. Make sure that the display settings match the recommended settings for your monitor, and try changing the refresh rate to see if there is any improvement.

Overheating issues: Overheating your computer can cause your screen to flicker or go black. Make sure your computer is well cooled, clean up dust, and make sure your fans are working properly. You can also consider using a cooling pad or adding a fan to lower the temperature.

Hardware failure: Certain hardware issues, such as power issues**, graphics card failure, or loose cables, can also cause the screen to flicker or go black. If none of the above methods work, it is recommended to contact a professional technician for inspection and repair.

A black screen is a common phenomenon, especially on older computers or builds. There are many reasons for the failure of a computer black screen, such as a damaged monitor, a damaged motherboard, a damaged graphics card, a poor contact of the graphics card, a damaged power supply, a damaged CPU, etc.

1) The monitor is powered off, or the monitor data cable is in poor contact. In addition, the computer has been used for a long time, and the power cord of the monitor is easy to oxidize and break;

2) There is no power supply to the motherboard;

3) Poor contact or damage to the graphics card;

4) Poor CPU contact;

5) Poor contact of memory modules;

6) The machine is infected with CIH virus, and the BIOS is refreshed destructively;

7) Check the plugging and unplugging, if necessary, you can use a rubber to remove the oxide film on the gold finger;

8) If the floppy drive has a floppy disk, many times it will cause the computer to start or restart, and the computer will have a black screen and cannot enter the system. To avoid such situations, it is also possible to cancel the floppy disk boot item in the BIOS.

For the treatment of the black screen of the computer, the method of eliminating and replacing is basically adopted, and the principle should be based on replacing and eliminating the most suspicious parts first. For ordinary computer users, professional knowledge is insufficient, you can follow the following steps to analyze the cause of the failure, so that you can do it yourself.

Start by checking that the contact is good. Check whether the contact between the graphics card and the monitor is good, and whether the contact between the graphics card and the motherboard IO slot is good, and if necessary, remove it and reinstall it again to ensure that it is installed in place and in good contact.

If there is no problem with contact, it is best to try a different monitor to make sure that the monitor is fine.

If there is no problem with the monitor, check whether the CPU fan is running, if it is running, use a multimeter to measure whether the voltage output is normal to 12V, 15V, if not, you can change the power supply to give it a try.

If the black screen still appears, take out the components installed in the computer, leaving only the CPU, graphics card, and memory sticks, and the cause of the fault can be limited to the CPU, motherboard, and memory. Generally, if there is a fault in the memory, there should be an alarm sound. If the memory fault is ruled out, only the CPU and the motherboard are left.

Change to a normal CPU (should be compatible with the tested computer), boot the computer and re-test, if the black screen still appears, you can only change to a motherboard, and the problem should also appear on the motherboard.

A black screen may indicate a serious problem with your computer, and you may wish to eliminate it as described above when the black screen occurs. In the process of treatment, the method of exclusion and substitution should be flexibly applied, and the phenomenon that occurs in a timely manner should be excluded and treatedv

1.Check that the monitor cable is firmly and reliably plugged into the host interface, and then check that the contact between the graphics card and the motherboard's I-O slot is good;

2.If the computer starts normally with another monitor, the original monitor may be damaged;

3.Check if the CPU fan is running;

4.You can remove all components except the CPU, graphics card, and memory sticks, and then power on the computer. If there is a fault in the memory, there should be an alarm sound. If there is no alarm sound, then turn on the CPU and re-detect. If the computer screen is still black, it is recommended to replace the motherboard;

5.Whether the system has installed software and update patches, and if so, uninstall the update files;

6.After installing the software on the computer, restarting the update results in a black screen, just wait for the update to complete;

7.You can go into safe mode to repair your computer, if you can't enter safe mode, please reinstall the system.

To answer the black screen of the computer, you need to judge the reason according to its situation: if the black screen is frequent, it may be that the power supply is insufficient; If the screen is black periodically, it may be that the monitor is automatically off; If the screen is intermittently black, the graphics card driver may not match or the display interface is loose.

1. If the power supply is insufficient, you can replace a power supply with a larger power;

2. Due to automatic screen off, the display can be turned off for an extended time in the display settings or system display settings;

3. If the hardware interface is loose or the driver is incompatible, you can check the interface connection and update the hardware driver.

The screen always flashes black after the question is turned on, and sometimes it flashes for a long time.

To sum up, be sure to regularly clean up the "garbage" inside and outside the computer, and do computer physical examinations frequently.

Let's see if there are any of these problems.

Splash screen generally refers to the display problem on the computer monitor, during the operation of the computer, the screen screen flickering or irregular flashing, sometimes horizontal lines and vertical lines. The splash screen and the snowflake screen are mainly caused by the problem of the graphics card,The snowflake screen is similar to the snowflake screen of the TV,The splash screen is like a problem with the graphics card driver,The picture is complete,But the eyes are extremely uncomfortable。 Therefore, the graphics card should be overhauled first, but problems with the display itself are not ruled out.

Causes and solutions.

1. The temperature of the graphics card is too high.

Check if the radiator is working properly and remove the ash layer.

Second, the graphics card driver problem.

Update the graphics card driver or reinstall the driver (updating the driver is dangerous, it may cause the computer to not boot up, etc., do not try it if you have no experience).

3. The monitor refresh rate is set too low.

When the refresh rate of the display is set to be lower than 75Hz, the screen often shakes and flickers, so adjust the refresh rate appropriately, such as setting it higher than 85Hz, and the screen shaking will generally not appear again.

Fourth, the power transformer is too close to the display and chassis.

When the power transformer is working, it will cause large electromagnetic interference, which will cause the screen to shake. Keeping the power transformer away from the chassis and display can solve the problem.

Fifth, the inferior power supply or power supply equipment has been aged.

The workmanship and materials used in many miscellaneous computer power supplies are very poor, which can easily cause the circuits of the computer to be poor or the power supply capacity can not keep up, and when the system is busy, the display will especially appear screen shaking. When the power supply equipment of the computer starts to deteriorate, it is easy to cause the same problem.

Sixth, the speaker is placed too close to the display.

The magnetic field effect of the speaker will interfere with the normal operation of the display, causing the display to produce magnetic interference phenomena such as screen shake and color crossing.

7. Viruses are to blame.

Some computer viruses can disrupt the screen display, such as: character inversion, screen shaking, graphic flipping display, etc. The ubiquitous screen shake scripts on the internet are enough to make your head as big as a cow after a hit.

8. Poor contact of the graphics card.

After the graphics card is reinserted, the fault can be troubleshooting.

9. Win95 98 system after write cache.

If this is the case, disabling all drive write-back caching in Control Panel - System - Performance - File System - Troubleshooter will resolve the problem at all.

10. The power filter capacitor is damaged.

Open the case, and if you see the top of the power filter capacitor (the largest capacitor on the board) bulging up, then the capacitor is broken, and the screen shake is caused by a power failure. Once the capacitor is replaced, the problem can be solved.

If so, there should be something wrong with the monitor. But if it's okay, it should be a problem with the power supply, it may be that the voltage is different somewhere, it may be the place of the graphics card, it may also be the place of the power supply, you should be able to find the problem if you check it carefully, if not, you see if the wiring of the display is loose. I think it should be checked, because the computer is older after all.

First of all, determine whether the monitor is normal.

Are you using a discrete graphics card?

If so, the power supply causes the discrete graphics card voltage to be unstable or the graphics card needs to be repaired.

If it's the same as above!

The reasons and how to deal with the blue screen that cause your computer to always be blue are as follows:

The first type: If your computer often has a blue screen, whether you have not reinstalled the system, or later reinstalled the system, or there is a blue screen, it means that it is a problem with your hardware, and the direct hardware is a memory module or graphics card. Generally, this is due to the blue screen phenomenon caused by the oxidation of the gold finger of the memory or graphics card or poor contact with the slot.

The solution is: you can turn off the power first, open the compartment, dial out the memory, use the eraser against the part of the gold finger (that is, where there is a copper sheet,) and wipe it back and forth a few times, and then change a memory slot to plug it back, it's OK, if you do this or a blue screen, you have to check the graphics card, indicating that it is a problem with the graphics card, and it is OK to do it with the same method as above. Generally, 80% of computers can solve the problem.

The second type: is the hard disk has a bad sector, when the computer reads the bad sector, it is stuck, the background is still running, the CPU occupancy is immediately very high, and then the blue screen, processing method: under normal circumstances, it is repaired with HDD, if it can't be repaired, which can only change the hard disk.

The third situation: that is, the video memory and the graphics card's video memory chips appear virtual soldering, and the blue screen will continue to appear, the method is to add solder to the video memory

The fourth is: the computer is poisoned, causing the memory to enter the virus, destroying the operating system, causing the system to be unable to boot, and the blue screen is all the time, where to reinstall the system, or one-click restore.

Fifth: It is because of illegal shutdown, such as power failure, forced shutdown, or sudden crash, after turning on, it will be self-checked, it is also a blue screen, in the countdown, under normal circumstances, let it read it by itself, it is OK, it may waste a little time, but it must read it by itself, because this is the process of checking the disk by the hard disk, generally read it for the first time, and it will not appear next time. Don't stop with ESC, you can't have a blue screen next time, start again.

If you want to self-test every day, you have to start after entering the system: start - run ---chkntfs t:0", and the general problem will be solved.

Before doing the above, it is best to restore the BIOS of the motherboard to the factory value, or you can discharge the motherboard battery, that is, remove the battery, wait for 20 seconds and then install it back, or connect the jumper to two or three, which is conducive to eliminating strange phenomena caused by the disorder of the motherboard BIOS.

It may be that the display refresh rate is set incorrectly.

The way to check this is to right-click in the empty area of our desktop --- Properties - Settings - Advanced --- Monitor From this, you can see that the refresh rate of the monitor is set to "60", which is exactly what causes the monitor screen to shake constantly. Set the new frequency to "75" or higher, and then click OK to return to the desktop.

Detailed steps to solve the problem:

The first question: display problem, this may be a problem with the display, aging problem, this needs to go to a professional testing center to test, how to judge that it is a display problem? We connect the computer directly to another monitor, and if there is no flickering problem, it means that there is a monitor problem.

The second problem: the computer is set up and the refresh rate of the computer's resolution can also cause the computer to flicker. After the previous question, the test is not a display problem, so let's test the resolution problem, adjust the resolution, and try to set it, will this kind of problem still occur?

The third problem: the problem of the connecting cable, which may lead to the poor connection of the output signal, such a situation, this is very simple, is to change the new one to test.

The fourth problem: power supply or voltage problems, sometimes the power is not good, such as: rural areas, large factories, etc., resulting in voltage instability, or, the power supply problem in the computer host will also lead to various problems, which may affect the black screen of the monitor, and so on.

The fifth problem,That's the computer host problem,If there is a graphics card,It may mean that it is a graphics card problem,This needs to go to the computer repair shop to test,It's safer,Don't make an assertion to buy a graphics card yourself,Replace it。