No signal from computer monitor at work 30

Is the host running?

1. You can check whether the memory module, graphics card, and CPU fan are loose.

2. Have you used a screen saver: set an hour to turn off the monitor or turn off the hard disk, etc.

3. Turn on the power of the host to see if it is powered on, and the display on the display shows that there is no signal because the host transmits information and does not display it on the monitor.

If you have a new computer, the memory problem is the most likely, it is recommended to take a re-plug to try it, if not, change the memory, if the old computer, then there are more possibilities, anyway, the hardware problem.

Is the landlord set up a sleep function?

After reading the answer on the first floor, I have nothing more to say!

Summary. 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 or damaged contact of the graphics card;

4) Poor CPU contact;

5) Poor contact of memory modules;

6) The machine is infected with the 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;

What happened when the computer was working normally and suddenly there was no signal on the display screen.

If the cable is okay, this may be a problem with the graphics card, you can unplug the graphics card and clean up the gold finger to try, and then it may be a problem with the graphics card slot on the motherboard.

The power indicator flashes to alarm, and there is no signal.

1) The display is powered off, or the display data line is not in good contact with the rock. In addition, the computer has been used for a long time, and the power cord of the monitor is easy to oxidize and break2) There is no power supply to the motherboard;(3) The graphics card is not in good contact or damaged;4) Poor CPU contact;5) Poor contact of memory modules;6) The machine is infected with the CIH virus, and the BIOS is refreshed destructively;(7) Check the plugging and unplugging, and if necessary, use erasers to remove the oxide film on the gold-fingered jujube wax;

Summary. Sometimes it happens that the host is normal after the computer is turned on, and the monitor shows no signal. In this case, it may be due to the computer itself not starting normally, or the power of the monitor is not turned on, check whether it is caused by the failure of the ** cable, and try to change it;It is also possible that the monitor is damaged, which can only be repaired or replaced.

Then the reasons why the monitor has no signal after the desktop computer is turned on are as follows:

The desktop works, and the monitor has no signal.

Sometimes it happens that the host is normal after the computer is turned on, and the monitor shows no signal. In this case, the old bridge may be due to the computer itself not starting normally, or the power of the monitor is not turned on, check whether it is caused by the failure of the first cable, and try to change it; It may also be caused by the damage of the display, which can only be repaired or replaced. Then the reasons why the monitor has no signal after the desktop computer is turned on are as follows:

Can you elaborate on that a little bit more?

1. Loose interface: If there is a sudden problem of no Zhaosen signal or no signal at startup, first check whether the monitor cable on the computer is loose, and tighten it if it is loose. 2. The connection line is damaged

If there is no recovery after the inspection is completed, you can try to find a good monitor cable to try it to determine whether the cable is faulty. 3. Display failure: The display troubleshooting is very simple, you only need to find a normal display to connect it, if the normal display is the display failure.

4. Chassis line interference: There are many situations where there is no signal in use, and then the screen is black directly, at this time, it is likely to be a problem with the main chassis. 5. Dust or dirt:

If you want to detect the main chassis, you must first make sure that the power is turned off, find the graphics card near the location shown in the figure below after disassembling the main unit and unplug it, do some cleaning and then plug it back in to see if it is displayed normally. (Different host graphics cards may not be the same) 6. Battery power: The battery may also cause a sudden black screen without signal, you can try to find the battery, remove it, press it after a few minutes, or change it to a new battery to check whether there is a problem with the battery.

7. Static electricity: In many cases, the cause of static electricity will also be high, resulting in a black screen without signal! The solution is to unplug the main power cord and wait for a while before plugging it back in.

8. If all the above steps have been tried and the problem has not been solved, then it is necessary to find a professional to repair it.

Summary. Desktop computer monitor shows no signal and how to solve it:

1. Check whether the data cable is plugged in, and if possible, you can change the cable or monitor to try;

2. If it is a discrete graphics card, it may not be plugged in well or the power supply is insufficient.

3. The memory module is not plugged in properly, or the metal sheet is not in good contact, which affects the normal boot.

4. If you replace other monitors (TV can also be displayed), then it may be a problem with the display;

5. The problem of power supply, insufficient power supply or damage, resulting in the inability to start normally.

There is no signal from the computer monitor.

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The general reasons and solutions for the desktop computer monitor to display no signal: 1. Check whether the data cable is plugged in, and try to change the cable or monitor if possible; 2. If it is a discrete graphics card, it may not be plugged in well or the power supply is insufficient. 3. The memory module is not plugged in properly, or the metal sheet is not in good contact, which affects the normal boot. 4. If you replace other monitors (TV can also be displayed), then it may be a problem with the display; 5. The problem of power supply, insufficient power supply or damage, resulting in the inability to start normally.

The TV monitor shows no signal:

1. First of all, check whether the interface between the monitor signal cable and the host of the computer host is loose, and if it is loose, re-plug it. 2. Then check whether the interface and line of the display signal cable are damaged, if the interface and line are damaged, replace a new display signal line. 3. Then check whether the monitor interface on the computer motherboard behind the host is intact, if the display interface is rusty or the interface pin is damaged, remove rust and correct the interface pin.

4. Check whether the memory slot and memory module are firm next to the CPU of the computer motherboard, and reseat them if they are loose. 5. Check whether the interface between the discrete graphics card and the motherboard is loose, and if so, reinstall the graphics card. Note:

When the machine has a discrete graphics card, the cable connecting the host unit to the monitor must be plugged into the graphics card and not the motherboard. 6. If the memory is intact, please use an eraser to wipe the metal part of the memory (gold finger). 7. Finally, after the computer host is checked, check whether the display input interface of the display is damaged, mainly check whether the pins of the interface are deformed, if the hardware settings are damaged, please replace them or go to a professional maintenance point for maintenance.

The user's computer is working normally when it is turned on, but the monitor has no signal input, and the connection between the computer and the monitor can be checked to see if there is a problem. If there is no problem with the graphics card, then the solution to the computer boot display display shows no signal is as follows: 1. It may be a power supply problem of the computer, please check whether the power socket is normal and whether the power cord is normal.

2. Motherboard problems, if there are no problems with the above two, then the possibility of motherboard failure is relatively large. First of all, check whether the connection between the motherboard and the boot button is loose and whether the switch is normal. You can try shorting the switch with a wire.

3. Remove the dust in the chassis: After unplugging the power supply, unplug all boards, remove the CPU, remove the motherboard, and completely remove the dust in the chassis. 4. Motherboard discharge:

Pick out the motherboard battery and leave it for 3 to 7 seconds. 5. Rust removal and oxide film: unplug the memory module, expansion card and other plug-ins, wipe the gold finger with an eraser and clean it.

6. Hardware reset installation: The board should be plugged in, and the CPU and the radiator should be coated with thermally conductive silicone. 7. If the above methods are not solved, they can be sent for maintenance.

Precautions 1, repair to the service center during the warranty period If the computer is still within the warranty period, then as long as you go to the regular after-sales service center to repair the computer, so that you can enjoy a certain amount of free repair, and the repair is more centered, you can also maintain the computer. 2. Find a computer maintenance department that has been in operation for a long time If the computer is now out of the warranty period, if it is repaired by a regular service center, the service center charges very high, so many people will find a computer maintenance department that has been in operation for a long time and let them repair the computer. In particular, it is more suitable for a store with a lot of people, so you can see that the repair process of this store is good.

3. Try to prevent the computer from being put in the maintenance point for many hours, some repairs to the computer when the store says it is very busy, it will put the computer on which side, then you should think clearly, first of all, you must consider whether this repair point is safe, whether the computer will be lost, or replace some important components, these are to be considered clearly.

Possible reasons for the computer display no signal: The connection of the monitor data cable host is loose or has fallen off ) The display data cable is damaged (this situation is generally rare, the main attention is that the pins are not bent or the needle is broken) ) The internal problems of the computer host (mainly such as loose memory modules, loose graphics cards, poor output interfaces, etc.). The solution to no signal from the computer monitor:

1. For computer problems, generally starting from simple to complex, first of all, the more common data cable connecting the monitor and the computer host is loose, poor contact, when the computer monitor has no signal, the first thing to see is whether the display data cable is connected, in addition, if the computer uses a separate display platform, the data cable should be connected to the first output interface of the graphics card, not the first signal output interface of the main board. 2. Another common one is that the computer memory module is loose or caused by too much dust, resulting in no signal on the display, the most obvious situation in this situation is that everything seems to be running normally inside the computer, but there is no signal on the display. This kind of problem is more in the computer for a long time, a long time has not been cleaned up dust is likely to appear, the solution is to take out the memory module, clean the memory stick gold finger with a paper towel, and then install it back; Another is that if it is a solo graphics card, a similar problem will occur if the graphics card is loose, and it is recommended to reinstall the graphics card to solve the problem.

3. Some other reasons occur relatively rarely, such as the data cable is broken, the data cable pins are broken or the memory or graphics card is damaged, etc., the last situation is that the computer boots up without any response, open the chassis and see that nothing is running inside, this situation may be caused by the host power supply is not connected well or the power supply or motherboard is faulty, this problem is more serious, and it needs to be repaired and solved.

The normal display screen of the host shows no signal, which is probably because the interface of the computer display screen is damaged and cannot be connected normally; VGA signal issues; Memory problems with the host computer, etc. The above situations are handled in the following ways.

1. The interface of the computer display screen is damaged and cannot be connected normally.

Solution: Take a normal display screen and connect it to the host, and it can run normally after restarting, which means that the computer display is a problem and needs to be replaced or repaired by a professional.

2. VGA signal problem.

2) If the VGA signal cable itself is faulty, replace it with a normal VGA signal cable.

3. Memory problems of the computer host.

1) Turn off the main unit and unplug it. Open the case, remove the memory module, and pay attention to press the buckles on both sides at the same time to remove it.

2) Check whether the gold finger of the memory module is damaged, if so, it is recommended to replace it to avoid burning the motherboard.

3) Use an eraser to wipe the gold finger of the memory module to remove rust and oxide film.

4) Then insert the memory card into the motherboard, pay attention to the front and back to avoid accidentally damaging the memory module. Insertion method: Open the clip twice, put the memory card into the memory slot, and press it firmly.

5) Plug it in, turn on the computer, and check if it solves the problem.

1. Now the best way is to hang the memory, CPU, and hard disk to other motherboards to see if there is a problem with your motherboard.

2. The display shows no signal, indicating that the display is powered on, you say that the host is running normally, although the hardware has been judged to be bad, it is recommended that you still cut off the power supply of the monitor and the host, and then take off the connection line between the display and the host and reconnect it, pay attention to see if the pointer of the connection line of the display is damaged.

3. It is estimated that it is a problem with the graphics card I don't know if your graphics card is integrated or independent If you are independent, use an eraser to try the gold finger of the graphics card.

4. Try to power off the host, buckle the motherboard battery and discharge, and clean up the memory with a gold finger and a separate display.