The computer can t be turned on, the monitor shows no signal input, and the host automatically goes

There are several possibilities for this problem,One is to make sure that your host can start,Change to other monitors can display no,It can be the machine number,The display is broken,The second is that the machine itself does not start automatic shutdown,Is it able to hear the sound of the drop after shutting down or no sound shutdown,You can hear the sound shutdown then your switch may have a problem,Change clothes is good,If you can't hear the shutdown,That's not started,Then look at the memory,Graphics card,And other hardware。 If you have tried all of the above, you can't open it.,Maybe it's a problem with the board.,By the way, there's ash.。

If the memory or graphics card is not in good contact, unplug them, wipe them with alcohol, and then install them, and it should be fine.

Summary. Hello, in this case, you must disassemble the chassis, first unplug the power cord, take out the chassis and put it down, there are screws in the back, open the cover directly, and then find the memory module, break the buckles on both sides, take out the memory module, wipe the gold finger, and realign the interface and plug it in.

The host is turned on, the computer shows no signal, the computer has not played for a long time, the host is turned on, the display will be bright, no signal will be displayed, and then extinguished, is there any solution.

Hello, I am a pleasure to serve you, I am an electronic engineer who has worked in a professional electronics company for more than 4 years, with rich experience in the electronics industry, good at computer, mobile phone, components, various home appliance maintenance, in the question (1v1 consultation) service more than 700 customers, I have seen your problem, please wait for 5 minutes. The answer is being collated

Good. Hello, the desktop computer will not be turned on for a long time will cause the motherboard to be damp, and it will also cause the internal components to age and rust, but the reason for the failure of your desktop computer is that the host does not work, this fault is the oxidation of the gold finger inside the host, and it is best to wipe the gold finger with an eraser. Hope mine is helpful to you!

What is Goldfinger.

Hello, it's a memory module.

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No, that's right, the host works, and then the display lights up (yellow light) and it starts automatically, but it shows no signal and then it turns red.

Hello, in this case, the host CPU has not been fully booted, that is, the memory module has not been detected, and it needs to be plugged and unplugged again.

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Can you not take it apart and think of other ways?

Hello, in this case, you must disassemble the chassis, first unplug the power cord, take out the chassis and put it down, there are screws in the back, open the cover directly, and then find the memory module, break the buckles on both sides, take out the memory module, wipe the gold finger, and realign the interface and plug it in.

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Summary. The computer is just a fan turning, the screen is not displayed, and the host cannot be turned off, there must be a problem with the computer hardware, it is best to use the replacement method to eliminate the problem, judgment method:

Press the case on the keyboard. The light is on, indicating that the graphics card, monitor, and other hardware are faulty.

If the keyboard light does not light up, it means that there is a problem with the memory, CPU, motherboard, or power supply.

After the computer is turned on, the monitor has no signal, and the host computer cannot be turned off, what is the reason?

The computer is just a fan turn, the screen is not displayed, and the host can not be turned off, there must be a problem with the computer hardware, it is best to use the replacement method to eliminate the problem, judgment method: 1Press the case on the keyboard.

The light is on, indicating that the graphics card, monitor, and other hardware are faulty. 2.If the keyboard light does not light up, it means that there is a problem with the memory, CPU, motherboard, or power supply.

Hope it helps.

Summary. Let's try to fix it from a small point of view.

Check the wiring on the back of the case, tap to see if there are any plugs that are clearly loose, and secure each plug securely.

You can also disconnect the power supply and unplug all the wiring and reinstall it again.

The computer will turn on and off, and the monitor shows no signal, what should I do?

Let's try to repair the blind jujube feast from a small aspect. Check the wiring on the back of the case, tap to see if there are any plugs that are clearly loose, and secure each plug in place. You can also disconnect the power supply, unplug all the wirings and reinstall them.

02Try to fix the internal factors of the potato trouble. First of all, use tools such as a small bumper blow dryer or brush to clean up the dust on the motherboard, so as not to cause a short circuit on the motherboard or other substances to cause the problem that the display has no signal.

If there is no signal after cleaning the motherboard, remove the memory module from the motherboard, wipe the yellow metal part of the memory module with an eraser-based smile or paper towel (it should be too strong if it is not properly prepared), and then reinstall it.

If none of the above methods work, only contact the manufacturer or maintenance personnel for maintenance methods.