The computer screen keeps showing no signal

The computer monitor does not light up and only shows no signal input. What is the reason?

1. The reason why the computer display screen does not light up: The computer monitor is not powered on. Check whether the power switch of the computer monitor and the power adapter are powered on. If the power cord is loose, damaged, or the power cord has poor contact, you can move the monitor's plug or replace a cord.

2. It may be caused by the loose connection of the data cable between the computer host and the monitor. Here we will introduce to you the solution to the problem of black screen and no signal on the computer.

3. The computer screen is black but the host displays normally and there is no signal. It may be that the video cable connecting the desktop host and the monitor is in poor contact or there is a problem with the connected data cable.

4. Cause of failure: Usually the graphics card is loose or damaged. Solution: Open the case and re-insert the graphics card. Check whether there are small foreign objects in the AGP slot, otherwise the graphics card will not be inserted into place; for motherboards that use voice alarms, you should carefully identify the content of the voice prompts, and then solve the corresponding fault based on the content.

What should I do if the computer starts up and the screen shows no signal?

1. Hello, the computer starts up and the screen shows no signal. There may be the following reasons and solutions: 1- Check whether the monitor is connected correctly. .

#2. First, check whether the display signal line and host interface of the computer host are loose. If the line is loose, just unplug and plug it again. Unplug the monitor signal and check whether the interface and monitor signal cable are damaged. If the interface and wiring are damaged, just replace the monitor signal cable with a new one.

3. First, we need to check the position of the display signal cable and host interface of the computer host to see if they are loose. If the line is loose, please unplug it again. Unplug the display signal and check whether the display signal line interface and circuit are damaged. If the interface and line are damaged, please replace the display signal line with a new one.

4. After the computer host is turned on, the reasons why there is no signal on the display screen may be as follows: The connection between the monitor and the computer is not normal. Please check whether the connection between the monitor and the computer is firm and whether the wires are plugged in properly. You can try to replug and unplug the data cable, or replace it with a new one for testing.

5. The reasons and solutions for no signal on the monitor when the computer is turned on are as follows: Reason 1: It is possible that the video cable connecting the desktop host and the monitor is in poor contact (especially the interface is not plugged in properly or is loose), or it is possible that There is a problem with the connected data cable, so there is no signal input to the screen, no display, and a black screen.

6. The specific method is as follows: First, we need to check the position of the monitor signal line and the host interface of the computer host to see if it is loose. If the line is loose, just unplug and plug it again. Unplug the signal from the monitor and check whether the interface and circuit of the monitor signal cable are damaged.

Why is the computer display showing no signal input?

1. System version: windows10. Taking ASUS adolbook14 2020 as an example, there are three situations when the computer shows no signal input: The power supply inside the computer is burned out. Or the main version is burned. The connection between the computer monitor and the host computer is loose. The gold finger of the graphics card is dirty, resulting in poor contact.

2. Solution to no signal on the computer display: If there is a sudden problem of no signal or no signal when turning on the computer, first check whether the monitor connection cable on the computer is loose. If it is loose, tighten it.

3. Setting the resolution too high will also cause the monitor to have no signal. Just enable VGA mode to change the resolution. Generally speaking, 1024x768 and 800x600 are universal resolutions. If there is too much dust in the chassis, poor contact between the memory, graphics card and slots will also cause the display to not display. Clean the dust on the motherboard.

4. Power supply problem: If there is a problem with the power supply of your computer or monitor, it may also cause the monitor to not work properly. These may be common causes of No Signal Input errors on computer monitors.

5. The computer display shows no signal in the following situations: Pay attention to whether the motherboard light is on, the CPU fan is not turning, and the power supply fan is not turning. If there is no alarm, it is estimated that the motherboard may be more damaged; if the CPU frequency set in the CMOS of the jumper-free motherboard is incorrect, it may also cause a no-display fault.

6. Check whether the computer host is working properly: If the computer host itself fails, it will also result in no input of the display signal. You can try to restart the computer host, or connect the computer host to another monitor to test. Check whether the graphics card is working properly: If the graphics card fails, it will also cause the display signal to have no input.

What are the reasons why there is no signal on the computer monitor?

1. There are the following situations when the computer monitor shows no signal: Pay attention to whether the motherboard light is on, the CPU fan is not spinning, and the power supply fan is not spinning. If there is no alarm, it is estimated that the motherboard may be more damaged; if the CPU frequency set in the CMOS of the jumper-free motherboard is incorrect, it may also cause a no-display fault.

2. The reasons why the monitor shows no signal include: loose and damaged monitor interface, damaged data cable, damaged chassis interface, loose independent graphics card, loose integrated graphics interface, etc.

3. Graphics card problem: - Check whether the graphics card is plugged in and firmly connected to the motherboard (only for desktop computers). - If you have both discrete and integrated graphics, try reinstalling the discrete graphics or switching to integrated graphics to test. Memory Problem:- If there is a problem with the computer memory, it may also result in no signal display.

4. The reason why there is no signal on the computer monitor: Check whether the data connection cable is loose or damaged. If it is loose, tighten it. If not, find a new one and test it. If the computer monitor shows no signal for a while and then goes black, the main problem must be with the computer host, so start repairing it from the graphics card and motherboard.

5. Reasons why the monitor shows no signal: loose data cable, damaged data cable, graphics card socket, graphics card slot, memory problem.

6. When using a desktop computer, we often encounter the problem of no signal input on the monitor. This may be caused by loose interfaces, damaged cables, faulty monitors, chassis, power supplies, batteries, etc. It needs to be solved separately.

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