The computer shuts down suddenly, and it can t be turned on anymore, but there is no signal, what s

1. Check whether the connection is good.

2. Make sure the graphics card is broken.

3、Make sure the display is not bad (generally not broken) Hehe) Basically, this is the problem,I've encountered the same problem before, the result is the graphics card,You try it a few more times。

I really can't take it to others and let others see it, and give you a new card to try.

If the red light does not turn on, the hard disk is not working and the system self-test has not passed. If there is no display when you turn it on again, the above phenomenon is still there, and it is very likely that the CPU is broken. It can be displayed normally, press the del key to enter CMOS, and see if some basic parameter settings have changed, at least hard disk, memory, graphics card and other information.

No signal means that the monitor is not receiving a signal, the computer may be damaged, or there is a problem, such as the internal power supply is broken, etc., go fix it buddy.

Sudden automatic shutdown may be due to high temperature and automatic shutdown of the motherboard for self-protection.

I can't turn on the computer anymore, does it mean that the host power fan doesn't turn when I turn it on? Then it's most likely a power issue;

If the console boots up and it just doesn't show up, it is recommended to open the case, reinsert the memory stick, graphics card, etc., and try again.

Finally, make sure that there is a problem with the power cord you are using, and you can try to change it to a different power cord.

Take off the battery of the motherboard and put it on to try,,, this problem is generally caused by the power supply,,, if it is discharged, replace the power supply.

The monitor is not plugged in, check the cable between the monitor and the computer.

It could be an issue with the graphics card.

Computer shutdown without signal is generally caused by hardware failure, it is recommended to do the following checks:

1.Check if the power supply is working properly. Check whether the indicator light behind the power supply can be lit, whether the indicator light on the motherboard can be lit, and whether the computer fan turns when plugged in.

2.If the power supply is working normally, press the power on button to see if the front panel indicator light is lit and whether it can be turned on.

3.If it cannot be turned on, check whether the power supply circuit components of the motherboard are obviously scorched and blackened, or whether the plug is loose; If it can be turned on, it will be dealt with accordingly according to the fault prompted by the computer after booting.

The computer suddenly shows that there is no signal input, and then automatically shuts down, this situation generally has the following reasons:

1. Due to the heat dissipation problem of the machine, the CPU fan is not working properly, and the overall temperature of the chassis is too high, you can replace the CPU fan and open the cover plate of the chassis to solve the heat dissipation problem of the machine.

2. It may be that the voltage is not very stable, when the voltage is too high or drops below the minimum working voltage of the host power supply, the host will also protect and shut down.

3. The quality of the socket or power socket is poor, the contact is poor, most of the power sockets on the market are of poor quality, the internal contacts are manually soldered, and acid flux is often used, which is easy to lead to the oxidation of the solder joint in the future use and cause the circuit break or leakage between the live wire and the neutral line.

This is the computer host did not start, this situation is a hardware problem, unplug the memory and wipe it, ninety percent of this kind of problem, can not be solved only to send it for repair.

Then check it carefully, and the cable connecting the monitor to the computer host is loose.

There is no signal on the computer boot monitor, teach you 5 solutions.

If it doesn't turn on normally, check whether the memory module is in good contact, if there is a discrete graphics card, check the discrete graphics card, turn off and press and hold the power button, or you can unplug the power socket.

Reason 1: The screen will go black if the display is not in good contact.

Solution: You remove and clean up the interface behind the monitor connection to the main chassis, and try to connect it again, be careful not to connect the interface in reverse. If the contact is okay and it doesn't work, it's best to try a different monitor to determine if there is a problem with the monitor.

Reason 2: The memory module will go black if it is not in good contact.

Solution: If the memory module is faulty, there will generally be a beep long and short alarm sound, if there is an alarm sound, you open the case and take out the memory module to clean it with anhydrous alcohol or eraser, re-plug it once or try to change the slot, be careful not to insert the memory module in reverse.

Reason 3: The graphics card will go black if it is not in good contact. You remove the graphics card, clean it up, and try it back. If the contact is okay, it is best to ask someone to borrow one and try another graphics card to determine if it is a graphics card problem.

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

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.

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.

It could be an issue with the memory module. You unplug the memory module, wipe the metal feet with an eraser, and then put it back on. If not, you may need to change the memory module.

Shutdown can be turned off,You press the button that just turned on,Press it for a while,It's off,You said there is no signal,Look at it,But the reason for the poor contact of the graphics card,You remove the graphics card,And then install it,Plug and unplug the signal cable behind the display,

Reason for automatic shutdown of the computer:

The computer system is poisoned or malware, the CPU fan is broken, the CPU temperature is too high, the temperature is overheated, the power supply is broken, or new hardware is added, the power supply is insufficient, the graphics card or graphics card fan is broken, the motherboard is broken, the motherboard core is overheated, etc., the computer will automatically shut down.

Auto Shutdown Troubleshooting Methods:

1. There may be a problem with the BIOS settings, enter the BIOS to restore the default settings or take out the battery of the motherboard, reverse the buckle discharge, and wait for 5 minutes to reverse install it. Purpose: To restore the default values of the BIOS settings and eliminate the automatic reboot or shutdown of the BIOS cooling presets.

2. If the computer shuts down automatically when using a certain application software, the automatic shutdown failure may be caused by this program software, and the program software can be uninstalled.

3. Then check the power supply, the power supply quality is poor, aging or the power is too small, which can not meet the power supply needs of the computer accessories, and the high-power and high-quality power supply can be replaced.

4. Then use the elimination method to check the memory, graphics card, CPU, CPU fan, motherboard, etc.

5. Check the memory, the memory quality is not up to standard, poor heat dissipation, overclocking, mixing and inserting of different brands of memory and the CAS value setting is too low, etc., which can cause the computer to shut down automatically, and the memory parameters can be adjusted accordingly in the BIOS.

6. Check the motherboard, the motherboard aging, capacitor failure or pulp, the motherboard power pins, the motherboard and the chassis backplane short circuit can cause automatic shutdown, you can take the motherboard out of the chassis to check or test, then check whether the CPU fan rotation and the CPU temperature is normal, and then check whether the bottom of the CPU fan heatsink is dry, if it is dry, clean the silicone on the CPU fan, and then recoat the good silicone. If the fan is not normal, replace the CPU fan.

7. Cleaning method: It is a method to eliminate faults by cleaning the dust of the parts in the computer host. Dust is one of the factors that can also cause computer automatic shutdown failures, dust can cause parts aging, pin oxidation, poor contact and short circuit and other failures.

For these faults caused by dust, it is generally more effective to use the cleaning method.

8. The power supply system is unstable, which can also cause the occurrence of automatic shutdown faults, and a UPS backup power supply with voltage stabilization function can be considered.

Hello Eliminate problems with indoor voltage and socket quality.

The shutdown is mainly caused by insufficient power of the power supply or high hardware temperatureThe power supply is not enough to replace the power supply (the market price of ordinary power supply is 80 yuan, and the better one will be more expensive) The temperature (graphics card temperature, motherboard temperature and other hardware) is too high The motherboard protects itself, so the shutdown solution: coat the CPU with a layer of silicone that is, heat dissipation glue The market price is 2 yuan, and at the same time, clean up the dust of the CPU fan.

Lubricate the fan shaft.

Not yet to replace the fan.

The solution is these, if you don't understand the specifics, you can hi me to talk about it in detail——— drifting with the wind.

Shock wave, poisoning, it is recommended to reinstall the system. If you have important information, please seek a professional.