High score: Why is the monitor black but the desktop can be faintly seen?

Although the screen is black, you can vaguely see the screen - there is a problem with the brightness driver or control circuit, not the CRT, but also the graphics card.

The flat display may be aging the picture tube, and the weather is humid, and the humidity inside the display is also related, do you slowly light up the screen after turning it on? Or is it suddenly very dark and then slowly light up again? I used to have the same problem as you, and the repairer said that the picture tube was aging, and it was best to replace the display.

It may be a problem with the graphics card, remove the graphics card to wipe the dust and try.

Scold. It could be a problem with your monitor. You look at the contact of the line behind it?!`

There could also be a graphics card fan.!`

The problem with the display can be quite large`

It's definitely a graphics card issue, 100 for sure.

If you have to get back up to be good, talk about the obvious card problem.

Most likely there is a problem with the graphics card.

Laptop or LCD monitor. It was you who turned off the lights.

The root cause of the dark screen is that the lamp inside the LCD screen is not lit, which may be due to the damage of the lamp or the fact that the lamp has no working current and cannot be lit.

1. If you find that the display screen (TFT) of this book is very dark and contrasting, the light and dark notebook screen is still very dark, and you can't see clearly. It's just that the screen is dark.

2. If there is a problem with the lamp, the aging or short circuit of the lamp will make the display screen dark.

3. There is no voltage on the motherboard for the high-voltage board.

4. The high-voltage board is aging or burned out or the power connection line of the high-voltage board is loosened or burned, and the screen darkness caused by the high-voltage board is relatively common, because the high-voltage board works at high temperature for a long time, and the chip will be more likely to age or burn out.

5. The breaking of the screen line is also the reason why the screen is often dark, because NB is folded, and opening and closing the screen with too much force will wear the screen line, and frequent use will easily cause the screen line to break.

Look at the screen carefully, if it's a black screen, it may be an operating system issue, and you can reinstall the system.

If you can see the words on the screen with strong lighting, it means that it is a dark screen.

"Dark screen": The main manifestation is that the brightness of the LCD screen is not enough and cannot be adjusted. Usually, the high-voltage package does not supply power to the LCD screen lamp.

The main reasons for the "screen dark" are:

Lamp disconnection: The aging or short circuit of the lamp will make the display screen dark;

The high-voltage package has no power to supply the lamp: the high-voltage board is aging or burned out, or the power connection line of the high-voltage board is loosened or burned;

The motherboard has no power to supply the high-voltage pack: the motherboard will have problems, aging or short circuits.

Broken or poor contact of the screen cable: Frequent use will easily cause the screen cable to break.

Solution: Send the notebook to the manufacturer's after-sales maintenance point, and ask a professional hardware maintenance engineer to help detect and repair.

Dear users, hello:

When you enter the system, you can see the mouse, which means that the system is not really black at this time.

It's just that it's black, and the mouse pointer display is normal, which means that there is no abnormality between the monitor and the computer host, and the operating system is faulty, which can be solved by the following methods:

1) Try to press "Ctrl+Alt+del" under the system to bring up the task manager, if it can be called up, force the explorer process to end, and then click in the file menu in the upper left corner of the task manager, select "New Job" and re-enter

Rebuild the explorer process.

2) Try to enter safe mode after powering it on.

Uninstall the graphics card driver and reboot it or select the last correct configuration to enter the system.

3) If none of the above methods work, the user can only reinstall the system.

China Telecom.

Display The monitor is used for a long time, and all kinds of small problems will follow. Experts believe that it is actually very simple to solve these small problems, and you can see where the fault is with a pair of eyes.

Common fault 1: When the computer is first turned on, the screen of the monitor shakes very much, and sometimes even the icons and text cannot be seen clearly, but it will return to normal after a minute or two.

This phenomenon mostly occurs in wet weather, which is caused by moisture inside the display. To solve this problem completely, you can use the moisture-proof sand from the food packaging to string it with cotton thread, then open the back cover of the monitor and hang the moisture-proof sand near the tube socket at the end of the CRT neck. In this way, even in wet weather, the above "problems" will not occur again.

Common fault 2: After the computer is turned on, the monitor only hears its sound and does not see its painting, and it is pitch black. It takes dozens of minutes for the screen to appear.

This is caused by leakage of the visor header and the header must be replaced. Removing the back cover reveals a small circuit board at the end of the picture tube, and the header is soldered to the board.

Above. Carefully unplug the board, solder the header, go to the electronics store and buy the same header, and solder the header back to the board. At this time, do not rush to put the circuit board back, first find a small piece of sandpaper, and carefully wipe the pins protruding from the end of the picture tube with sandpaper.

In particular, pay attention to the oxide layer on the pins, if you don't wipe it cleanly, it will soon become old**. Put the board back in and you're done.

Common fault three: There are always lingering interference clutter or lines on the monitor screen, and there is also annoying noise in the speaker.

This phenomenon is mostly caused by the poor anti-interference performance of the power supply. If you are too lazy to do it, you can replace it with a new power supply. If there is enough hands-on energy.

force, you can also try to replace the filter capacitor in the power supply yourself, which often works; If the effect is not obvious, the switch can be replaced altogether.

Come. Common fault 4: Gray screen of display.

This problem is mostly caused by the graphics card. If it's a new graphics card, it's probably that the card is of poor quality or incompatible, and then there's that the correct drivers haven't been installed. If the video memory is added to the old card, it may be caused by the difference between the newly added video memory and the original video memory model.

Common fault 5: The display screen is black.

If there is no signal transmitted to the monitor due to a damaged graphics card or a disconnected monitor, the monitor's indicator light will flash incessantly to indicate that no signal has been received. If the resolution is set too high, the maximum resolution of the display will also appear black, and the display will be destroyed, but the current display has a protection function, and it will be automatically protected when the resolution exceeds the set value. In addition, hardware collisions can also cause black screens.

Someone passing by the monitor with a black screen? Are you stepping on the power cable?

Causes and solutions for the display screen to automatically go blackout1

1. The display is faulty and causes a black screen.

On the internal power board of the display, the capacitance of the power supply output part is aging, leaking, bulging, and failing. When the display is first turned on, because the capacitor is not completely necrotic, in a short time, the power supply is normal, so it can be displayed normally. After working for a period of time, the power supply is seriously insufficient, causing the backlight of the LCD monitor to go out, causing the display to go black.

Solution: Send the professional display repair point for repair, and the components will be damaged even worse, and the cost will be about 30---50 yuan.

Solution: Re*, install and fix the signal cable of the monitor. If the fault persists, the signal cable can be replaced.

3. The performance of the graphics card is faulty and the operation is unstable, resulting in a black screen of the display.

Solution: 1. Test after updating the graphics card driver, if the fault persists, directly replace the graphics card for testing.

Note: If you are using an integrated graphics card, you can install a discrete graphics card for testing. Or directly replace the motherboard with integrated graphics for testing.

Fourth, the motherboard performance is faulty, and the operation is unstable, resulting in a black screen of the display. Solution: Directly replace the motherboard for testing.

Workaround for the attached monitor to automatically go black with a black screen:

1. If the monitor is not used for a long time, the monitor will automatically turn into sleep energy-saving mode and the screen will be black.

Solution: Take win7 as an example.

1) Right-click on the blank space of the desktop and select "Personalization" in the menu to open the personalization settings dialog box.

2) Click the red box in the picture above and select "Screen Protector" to enter the screen ridge screen protector settings dialog box.

3) Set the screen saver to "None". And click "Change Power Settings" to enter the power settings dialog box.

4) Click "Change Plan" to enter the change settings dialog box.

5) In the blue box selection, click the drop-down triangle, select "Never", and then "Save Changes" to exit.

After setting, the monitor will no longer automatically go black.