Everything is normal when the computer is turned on, but the monitor shows no signal?

1. First of all, we conduct a comprehensive check on the connection between the computer monitor and the host, and plug each connection back to see if there is a connection problem.

2. If the fault still exists, then we need to open the chassis to see if the chassis contains metals and other substances, causing a short circuit in the computer host circuit, and then we smell the computer to see if there is a burning smell, and see if there are damaged components around the motherboard and around the CPU.

3. After checking the whole chassis, there is no abnormality in the chassis, then we will dust the chassis.

4. If it can't be turned on, then use the minimum system method, unplug the data cable of the hard disk, floppy drive, and optical drive, and then check whether the computer can be turned on. Then connect the above devices to the computer one by one, when connecting a certain device, the fault will recur, indicating that the fault is caused by this device, and finally focus on checking this device.

5. If the fault still exists, it is likely to be a memory card.

Graphics card, CPU, motherboard, etc., at this time, we only need to plug and unplug these hardware, or replace it again, and try one by one to find the cause.

Check the power supply of the display, whether the power light of the display is on, whether the light is discolored, and there is no display on the screen.

It may be that the power of the monitor is not turned on, or it may be caused by a damaged monitor. You can try to check if the cable is faulty, or replace a graphics card to troubleshoot the problem. Here's a closer look:

1. Check whether it is because the power supply of the monitor is not turned on correctly, or the power cord is not connected;

2. Check the position of the monitor signal cable of the computer host and the interface of the host computer to see if it is loose. If the line is loose, reseat it; Or unplug the signal of the monitor, and check whether the interface and line of the signal cable of the monitor are damaged. If the interface and line are damaged, replace it with a new display signal cable;

3. If the host cannot be turned on normally, after ruling out the power supply problem, try to check whether the memory is plugged in tightly, generally after the chassis is moved, the memory may become loose and cause a boot failure, or blow the dust near the memory slot first, and then wipe the gold finger of the memory stick with an eraser after cleaning it up; It is also possible that the discrete graphics card is faulty, you can unplug the ** cable from the discrete graphics card, check if the motherboard has ** output port, plug it in and try it.

If the computer is running normally, and there is no ** signal, you should check whether the terminal of the signal cable is in good contact, unplug and plug it back in; If there is still no signal, the computer is not running properly. Check the hardware of the computer: unplug the memory module and plug it back in; Unplug the graphics card, clean the gold claws, and plug it back in.

If the computer is still faulty after checking the hardware, it is necessary to consult a professional to deal with it.

Everything is fine when the computer is turned on, and the monitor shows no signal, so first you need to make sure. There is no virtual connection of the cables connected to the monitor case. Generally, if you can't connect, there will be no signal.

1. The monitor is not powered on.

2. The monitor is not turned on.

3. The display signal line is loose.

4. The display signal source is incorrect.

5. The graphics card interface is broken.

It is recommended to plug and unplug the memory, it may be that the memory gold finger is oxidized or the contact is poor.

Make sure that the data cable of the monitor is installed correctly. In particular, don't connect the data cable of the discrete graphics card to the integrated graphics card.

Your computer boots up, the fan and keyboard are normal, but the display screen is black, which is a small power supply or blur, and you can change it.

It's because your console isn't on, or your computer is hibernating.

It may be due to the fact that the computer itself does not start 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.

This should be a problem with the plug-in cable behind the monitor, you can shake it and replug it in or replace it with a new one.

The reasons why a computer won't boot are complex and can be summarized into two categories: hardware reasons and system reasons. Under normal circumstances, if you can't pass the self-test, it's the hardware; It is the system that can pass the self-test.

Summary. If it is confirmed that the power is turned on, there is no problem with the host, and it is useless to rewire and change the cable, the monitor is broken. You have to contact the manufacturer or take it to a repair shop to fix it!

Everything is normal when the computer is turned on, but the monitor shows no signal?

Hello! We're happy to answer for you! This situation should be caused by a poor connection between the monitor and the main unit, you can try to reconnect the cable.

If you confirm that the power button is also pressed, you can try to change the cable.

If it is confirmed that the power is turned on, there is no problem with the host, and it is useless to rewire and change the cable, the monitor is broken. You have to contact the manufacturer or take it to a repair shop to fix it!

There is no spare cord to replace.

Reconnecting, doesn't that work either?

Is it the word "no signal"?

You can also take out the memory module and give it a try. I was in the same situation as you before, so it's good to do it!

Summary. Hello, just describe, first press the keyboard case and case keys to see if the keyboard case light can be lit. If it can be lit, there is a problem with the graphics card or monitor. If it doesn't light up, the self-test can't do it, and the computer is not working properly.

Recommendations, 1Turn off the power off, take down the memory and erase the gold finger part with an eraser. 2.Press the power button 5-6 times quickly and wait for 2 minutes.

3.Plug the memory back in, and then power on to try to turn it on.

Everything is normal when the computer is turned on, but the monitor shows no signal?

Hello, just describe, first press the keyboard case and case keys to see if the keyboard case light can be lit. If it can be lit, there is a problem with the graphics card or monitor. If it doesn't light up, the self-test can't do it, and the computer is not working properly.

Recommendations, 1Turn off the power off, take down the memory and erase the gold finger part with an eraser. 2.

Press the power button 5-6 times quickly and wait for 2 minutes3Plug the memory back in, and then power on to try to turn it on.

Determine which hardware problem is the first. Let's deal with it again.

But my black screen mouse also has a sound.。。 Look at the chassis situation is also all lit up.

Ignore it, just look at the keyboard case light, it will be on, it's your graphics card or monitor. It won't light up, so the host self-test can't be done.

This is the most accurate way.