My computer shows no signal.,And the host can t be turned off.,What s going on, please thank you.

The main computer can't turn off the machine, and the computer shows no signal.

What's going on with the computer can't turn off the computer, the computer shows no signal, the computer has no signal after the computer is turned on, and the host can't shut down, the main reasons for this situation are: 1. The system files are destroyed, such as win2k, the fonts under the win fonts directory and other basic files are destroyed when the system is running, and the system will be forced to restart when it starts up. 2. The power output power is insufficient, when running large-scale 3D games and other software that occupies large CPU resources, when the CPU needs high-power power supply, the power supply is not enough and overload causes power protection and stops output.

3. The DC output of the power supply is not pure, and the digital circuit requires pure DC power supply, and when the harmonic content in the DC output of the power supply is too large, it will lead to errors in the work of the digital circuit, and the performance is a frequent crash or restart. Hope mine is helpful to you, thank you and have a great day!

1. Check whether the power of the monitor is turned on, or whether the power cord is connected normally. 2. 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 module 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 the ** output port, plug it in and try it;

3. If the above situation is excluded, it is likely that the monitor is broken, and it is recommended to contact the monitor or computer customer service in this case.

Solve the problem that there is no signal on the display screen when the computer host is turned on:

You can consider removing the dust accumulated in the computer case, specifically unplugging the power supply of the computer first, then removing all the boards of the computer, and removing the CPU and motherboard of the computer together to clean up the dirt in the computer case more comprehensively. Alternatively, you can choose to discharge the motherboard of your computer.

That is, first remove all the power supply of the computer, including the battery of the motherboard, and then further short and clear the CMOS jumper and keep it for about 3 7 seconds, and then replace the battery for it. In addition, you can also remove rust and oxide film from the computer, first remove the memory module, and wipe the expansion card and other plug-ins with an eraser.

I believe that many friends have encountered such a problem, the computer boot monitor has no signal, the host should run normally, and the fan is rotating. So what should I do if there is no signal on the computer boot monitor? How to solve it?

The following will introduce to you the reasons and solutions for the computer boot display without signal.

The reasons and solutions for no signal on the computer boot monitor are as follows:

Reason 1: It is possible that the connection line between the desktop host and the monitor is not in good contact (especially if the interface is not plugged in or loose), and there may be a problem with the data cable of this connection, so there will be no signal input to the screen, no display, and black screen.

Solution: Just plug in the connected cable again, or replace the cable.

Reason 2: Due to the formation of an oxide layer on the surface of the gold finger of the memory or independent graphics card, the memory and the memory slot are in poor contact, and the graphics card and the graphics card slot are in poor contact, resulting in a black screen and no signal output.

Solution: You can turn off the power first, open the compartment, dial out the memory, use the eraser to wipe the part of the gold finger (that is, the place where there is a copper sheet) back and forth a few times, and then insert it back into the memory slot (or insert it back into another memory slot), and it's OK. If you have a discrete graphics card, you can also use the same method to deal with the graphics card, then insert it back into the graphics card slot, and finally install it, and restart the computer is OK (take the memory).

Reason 3: The graphics card's video memory is soldered, the performance of the main chip is reduced, the graphics card BIOS is disordered, and the control power supply IC is problematic, which will cause the graphics card to fail to work normally, that is, the graphics card is broken, and naturally the computer will have no signal output, and it will not be able to display, and the screen will be black when it is turned on.

The above is an introduction to the solution to what to do if the computer boots up the monitor without signal, if you also encounter similar problems, you may wish to follow the above methods! I hope the sharing of this article will be helpful to everyone.

Summary. Hello, I am happy to answer your question What is going on when the computer main computer can't turn off, the computer shows no signal The answer to your question is: This situation occurs, and the main reasons are:

1. The system files are damaged, such as the fonts under win2k, the fonts under the win fonts directory and other basic files are destroyed when the system is running, and the system will be unable to complete the initialization and be forced to restart when it starts.

The main computer can't turn off the machine, and the computer shows no signal.

Hello, I'm glad to answer your question about how the computer can't turn off the machine, the computer shows no signal The answer to your question is: this situation occurs, the main reasons for the standby stove are: 1. The system files are destroyed and noisy, such as win2k, the fonts under the win fonts directory, etc., the basic files are destroyed when the system is upgraded, and the system will be unable to complete the initialization and be forced to restart when it starts.

2. The power output of the power supply is insufficient, when running large-scale 3D games and other software that occupies large CPU resources, when the CPU needs to supply with high power, the power supply is not enough and the overload causes the power supply to fail and stop the output. Dry rules.

3. The DC output of the buried hunger power supply is not pure, and the digital cover liquid wax circuit requires pure DC power supply, when the harmonic content in the DC output of the power supply is too large, it will lead to the error of the slippery digital circuit, and the performance is a frequent crash or restart.

Hello, if the computer has no signal, the shelter may be due to the following reasons:1Graphics card failure:

The graphics card is not working properly, causing the computer to fail to output a signal. You can try replacing the graphics card or re-inserting it. 2.

Display malfunction: The display is not working properly, resulting in a signal that cannot be displayed. You can try changing the monitor or plugging it back in.

3.Loose monitor cable: If the monitor cable is loose, it will also cause the computer to fail to output signals.

You can check if the cable is plugged in tightly. If your computer won't shut down, it could be due to several reasons:1

System failure: The computer fails to shut down normally. You can try restarting your computer or entering safe mode to fix it.

2.Stuck programs: If a program is stuck, it may also cause the computer to fail to shut down properly.

You can try force closing the program or using Task Manager to end the process. 3.Power failure:

If the power supply fails, it will also cause the computer to fail properly. You can check if the power supply is working properly.