Why does the computer often have a black screen, alas, annoying, how to solve it

A black screen on a computer is actually a common fault.

From my personal experience, half of the assembly machines and laptops appear more, some are faulty, some are setting problems, and the solution to the failure is generally:

First, check whether the interface and power cord of the chassis power supply are in good condition. If the interface and power cord are damaged or broken, they should be replaced in time

1. The lamp may also fail, and the lamp should be replaced within 500 oceans;

2. There is also a booster plate, or a high-voltage plate failure, which is an element that supplies pressure to the lamp, generally at the bottom of the screen. The maintenance cost is about 200-300;

3. If the motherboard does not supply power. That is, there is no power supply to the booster plate. The maintenance is about 200-300 yuan;

4. Then there is the overheating of the machine, which causes problems with the graphics card;

5. If the memory is loose, try to see if the memory of the machine is loose, or you can also see if the hard disk cable is loose, etc.

Black screen suggestion: Take it to the manufacturer's repair station for free during the warranty period, or find a computer repair company with a good reputation.

There is also a black screen is a problem with computer settings, that is, it can be solved in this way if you don't use the automatic black screen for a long time:

Tap [Start] in the lower left corner of the screen - select [Control Panel] - find [Power Options] - select [Balance] - click [Change Plan Settings] - set the computer to sleep "Never".

However, if you set it up like this, the hard disk will work all the time, which will have a certain impact on the service life of the hard disk.

Hope mine can help you out.

Find someone to fix it, it's best, it's okay if you don't look for it.

Is it turned off or simply a black screen.

1. Loose memory and graphics card are the most common causes of a black screen on your computerSolution: Disassemble the main chassis, reseat the memory and graphics card, use an eraser to wipe the gold finger, and then plug it back in or change the interface

If you don't know how to disassemble the computer, it is recommended to take it to the computer store to repair2. It is also possible that the CPU cooling fan is broken!In this case, the computer can generally be turned on and can still work, but it will crash and black screen after a while

Solution: Replace the CPU cooling fan and check other hardware devices3. The hard disk is faulty, and the screen goes black and jumps to the blue screen interface

Solution: First look at what the blue screen appears is...

1. Check the power supply of the computer motherboard.

If it returns to normal, it may be that the computer is dead or hibernating, considering that it is a power supply problem of the computer motherboard, you need to replace the motherboard power supply and reinstall the system. If the screen is still black, the power supply is considered damaged and needs to be repaired.

2. Check the display.

Whether the monitor wiring is in good condition, you need to check it carefully, re-insert the monitor cable, if the computer suddenly flashes the word "no signal" after plugging in and the screen quickly blacks out, it is a wiring problem and needs to be replaced.

3. Check the memory module.

Turn on the host, take out the memory module, see if there is dust attached to its surface, and take an eraser to clean the gold finger on the surface, and then reinstall it, if the screen is not turned on, you need to replace a memory module.

Reinstall the system first to use it normally. If the system cannot be reinstalled, the hard disk is damaged, and you can only replace the hard disk and reinstall the system.

First of all, detect the power supply, when the computer is turned on, if the power supply fan does not rotate, then the power supply is not powered, it may be that the power cord is loose or the power supply is burned, replace the power supply or reconnect the power cord.

Then open the side cover of the host, clean up the dust and connect the various interfaces of the motherboard firmly, and replace the damaged data cable in time.

Then remove the memory and graphics card, clean the cheat part, that is, the part connected to the computer, clean it and then plug it back in.

Finally, if the above operations are invalid, then it may be hardware damage, such as CPU or computer motherboard, hardware damage can only be repaired by after-sales warranty inspection and replacement of damaged parts.

1. Check whether the power supply is plugged in, remove the memory module, wipe the memory module and reinstall it.

2. Unplug the hard disk and reinsert it, quickly tap "F8" after booting up, enter "Advanced Options", and select "Safe Mode".

3. If you can enter the system, use "velvet antivirus software" to kill the virus; If it doesn't boot up properly, use Device Manager to disable the second graphics card under Display Adapter.

The computer always has a black screen, is there any solution to it? It should be better to have a certain way to redo the system.

1. Display failure.

If in the process of using the computer, the monitor suddenly blacks out, don't worry, first observe the operation status of the chassis, if the chassis is still running normally, then the problem may be on the display, the first thing to check is the display power supply, if there is no problem, it can be determined that it is caused by the failure of the display.

The more common faults of the display include: damage to the display light source, damage to the built-in power supply, damage to the circuit board, etc., as long as one of these main components fails, it will cause the display to fail to work normally.

This kind of damage is not repairable, if it is within the warranty period, call the after-sales ** to repair it.

2. Power supply or motherboard failure.

If the monitor is black, you find that the computer case has also stopped running, and the display screen is black and then prompts "no signal", then you can basically rule out the problem of the display, first check whether the power socket is loose, if it is not loose, try to turn on the computer again, if the computer can not be turned on normally, but open the case to see that the power indicator on the motherboard is on, then it is possible that the motherboard or power supply failure.

The failure of these two components, the most common is the capacitor bulging, some low-configuration power supplies and motherboards use poor quality of capacitors, if the computer works for a long time, or long-term voltage instability, it is easy to cause capacitors to bulge.

If it is not a particularly big problem, the general computer company can be repaired, if it is determined that it is caused by the capacitor bulging, the capacitor can be replaced directly, and the maintenance ** is about dozens of yuan. However, if it is damaged in other areas, it may be necessary to replace the power supply or motherboard to fix it.

Third, the dust is large.

If the monitor shows no signal after the screen goes black, and the case stops running, and you feel hot when you touch the CPU or graphics card after opening the case, and press the boot button again after a few minutes, and the computer can restart and boot, it is most likely caused by the dust in the computer case.

Nowadays, CPUs and graphics cards have "protection devices" that automatically shut down when the temperature of these two components rises to a certain level and lasts for a certain period of time to prevent damage to these two components.

If the screen suddenly goes black during the use of the computer, it may be caused by the high temperature of these two parts, you can observe the dust in the case, especially the dust on the graphics card fan and CPU fan, if the dust is large, and it has been stuffed with heat sinks, then clean up the dust, and the computer can be used normally.

If you can't clean it yourself, don't disassemble it yourself, find a computer company to use a fan to clean it, and then reapply silicone grease.

1. Sometimes after installing some software or hardware drivers, you find that after restarting, the computer can't enter the system, and the screen has been black, which is the black screen of the notebook caused by the software. If the black screen is caused by imitation Leessen software, taking the Windows system as an example, we can restart the machine and press the F8 key several times when turning on the machine to bring up the system's boot options menu.

2. After the system boot options menu comes out, select Enter Safe Mode. If we can enter the safe mode normally, we can delete the software or driver installed before the black screen in the safe mode. Then restart the machine and see if the laptop can fix the black screen issue.

3. There are many reasons for the black screen caused by hardware. Let's talk about the cause of static electricity first, sometimes static electricity will cause the circuit of the notebook motherboard to be abnormal, resulting in no reaction on the screen after the power is turned on. We can try to unplug the laptop's battery and power supply, and then press the power start of the laptop a few more times to let the machine release static electricity.

Then connect the power supply, turn it on, and see if it can solve the fault.

4. The memory is loose or the memory has a hardware failure. There are several major components of a laptop computer, including the CPU, motherboard, memory, and graphics card. These parts are indispensable, as long as one of them has a problem, it will cause the laptop to not function properly, the most common is that the boot does not respond.

In general, the probability of CPU and motherboard failure is relatively small, and it is more common for the laptop to fail to boot due to loose memory. At this time, first dial the battery and power supply of the notebook, if it is not difficult to remove the computer, you can prepare your own mu to open the back cover of the notebook, and reinsert the memory. After plugging in the memory, power it on again, start the machine, and see if you can solve the fault.

5. The LCD screen part of the notebook is faulty. There are some notebooks that are a little older, and this may be the case. Display components generally include displays, data cables, and some other small parts.

If you have a desktop monitor, try plugging it into the VGA display connector on your laptop and switching the display to the VGA external display on your laptop. If you can switch to an external monitor, it means that there is a big problem with the display part.

6. The hardware failure of the graphics card, the graphics card is responsible for the source of all the display output of the computer, so it has a problem, and there is no display on the screen before the disturbance. If the graphics card is broken, we can't solve it ourselves, and we can only find the computer's after-sales solution. If the notebook is within the warranty period, it can be taken for free inspection and repair.

Isn't it almost an hour to black.,If it is, it's Microsoft's black screen patch funny.,You reinstall the system.,There won't be such a problem if you reinstall and turn off automatic updates.。

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) Machine infection.

CIH virus, BIOS

is destructively refreshed;

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.

Let's redo the system. It may be the result of an upgrade system patch. Didn't Microsoft announce the black screen of the computer some time ago?