My computer will suddenly go black, and make a B sound, and then return to normal, what is the probl

It's your monitor that's wrong, so get it overhauled.

1. The computer often has a black screen, but the power indicator of the display is on, and the black screen time is short, if the computer restarts after the black screen, then the power of the host power supply is too small, it is recommended to use some external devices at the same time, or change to a high-power power supply.

2. The computer often has a black screen, but it is good to manually go to the keyboard or mouse, and the desktop is still the same as before the black screen, it is set that the power supply time to turn off the monitor is too short, you can right-click the mouse button on the desktop, select Properties, and set the time to turn off the power of the monitor in the "Power" item under the screen saver. 3. If the screen is often blacked instantly, but the host power indicator has not been interrupted, and the black screen is still the same after the black screen, there is a problem with the circuit of the display, and the common thing is that the capacitor in the power circuit of the display is overcharged or the pins are soldered and intermittently powered off, resulting in a black screen. It is recommended to send the monitor to the relevant department for warranty or repair.

See if the CPU fan is broken, generally the fan is broken and can last about 10 minutes, if it is not for this reason, remove the graphics card and memory module and use the eraser to erase the gold finger and try again.

It's very simple, the back of the main chassis has not been cleaned for too long, and a lot of dust has accumulated, just wipe it clean.

If the fan doesn't rotate, or there is too much dust in the radiator, and the CPU is heating too high, it will alarm.

There is a problem with the memory, I pulled it out on the fork to see if it doesn't work, I want to change it.

The computer boots up with a black screen and the host is running normally, which is a common fault phenomenon, teach you how to solve it yourself.

The main chassis hasn't been cleaned up for too long.

If this is always the case, first soft and then hard, reinstall the operating system, do not install software, patches, drivers, etc., and see if there is still a problem with booting? If you don't install drivers, patches, and software step by step, don't install anything that doesn't fit (if you have any questions, please ask me).

Please note: If you restore the system or reinstall it, when installing drivers, patches, software and other things, be sure not to install the things that affect your accident this time, otherwise it will be restored or reinstalled in vain.

3) In terms of hardware, such as whether there is a problem with the hard disk, memory, etc., whether the temperature of the CPU and other hardware is high, if it is caused by hardware problems, it is recommended to overhaul it.

You can unplug the power supply and leave it for a while, plug it in and turn it on, there may be too much ash.

There are many reasons for the failure of the computer to turn on the black screen, such as the display is damaged, the motherboard is damaged, the graphics card is damaged, the graphics card is in poor contact, the power supply is damaged, the CPU is damaged, etc. For the treatment of the black screen of the computer, the method of eliminating and replacing is basically adopted, and the principle should be based on replacing and eliminating the most suspicious parts first.

1.Unplug the data cable connected to the monitor and the console, and turn on the power switch of the monitor separately. Generally, if the display is normal, it will display the manufacturer's information of the display or a prompt that the monitor is not connected, if it can be displayed normally, it indicates that the display is unlikely to be damaged.

2.Check that the exposure is good. Check whether the contact between the graphics card and the monitor is good, and whether the contact between the graphics card and the motherboard IO slot is good, and if necessary, remove it and reinstall it again to ensure that it is installed in place and in good contact.

3.If there is no problem with the monitor, check whether the CPU fan is running, if it is running, use a multimeter to measure whether the voltage output is normal to 12V, 15V, if not, you can change the power supply to give it a try.

4.If the black screen still appears, take out the components installed in the computer, leaving only the CPU, graphics card, and memory sticks, and the cause of the fault can be limited to the CPU, motherboard, and memory. Generally, if there is a fault in the memory, there should be an alarm sound.

If the memory fault is ruled out, only the CPU and the motherboard are left.

Caused by the CPU or graphics card temperature being too high or a memory being in poor contact.

Check the power supply and data connection cable of the monitor to see if there is a problem with the code spring.

Enter regedit in the run, press enter, open the registration expression, find the key, local machine software, microsoft windows, nt, currentversion, winlogonotify, wgalogon, delete this key, restart the microcomputer (be sure to restart), open c: windows system32, find after deletion, open the registry again, and delete the above key value once Don't forget to turn off automatic updates hehe, take a look at it, ok.

If you don't have that file, it could be a poor or damaged hardware or a problem with dust or a virtual model booster cable or display Check the following one by one

The computer has a lot of dust or moisture that causes poor hardware contact.

Poor contact caused by swinging of the computer during the moving process.

There are compatibility issues between hardware and hardware.

The hardware is damaged or faulty.

There is a problem with the graphics card.

The old problem of poor display.

Caused by other boards, such as memory, network cards, etc.

The configuration of playing Warcraft computer must be reached, otherwise there will be problems like yours. I guess your graphics card can't work, just go and change to a better graphics card.

The power supply or motherboard is broken.

Motherboards are generally broken in capacitors, and it is good to replace the leaking capacitors.

See if your CPU is hot or not.

The computer won't boot, and that's what I generally check.

Now I don't know where the specific problem is, there is no alarm sound, then consider the simplest problem first, such as loose memory sticks, or because of the oxidation of gold fingers, the motherboard cannot recognize the memory, at this time, unplug the memory stick, wipe it clean and insert it.

This usually solves the problem when you start up your computer.

If it doesn't work, if you have a discrete graphics card, you can also unplug it and wipe the gold finger, if the motherboard has an integrated VGA interface, you can use the graphics card interface of the motherboard, and plug in the graphics card after judging the problem.

If the memory graphics card can't solve the problem after wiping, then don't panic, you can take off the coms battery on the motherboard mountain, power it off, and install it after a few minutes.

Sometimes, due to hardware changes, the COMS configuration change may also lead to the failure to turn on, if these are not possible, you need to consider the motherboard or CPU problem.

1 Short: The system starts normally. This is something we hear every day and it also shows that there is nothing wrong with the machine.

2 Short: General error, please go to CMOS setup and reset the incorrect option.

1 Long 1 Short: There is an error with the RAM or motherboard. Try to change the memory, if it still doesn't work, you have to change the motherboard.

1 Long 2 Short: Wrong monitor or graphics card.

1 Long 3 Short: Keyboard controller error. Check the motherboard.

1 long 9 short: motherboard flash

RAM or EPROM error, BIOS corruption. Try a different block of flash ram.

Constant ringing (long sound): The memory module is not plugged in tightly or damaged. If it still doesn't work, you can only replace a memory module.

Ringing: The power supply and monitor are not properly connected to the graphics card. Check all the plugs.

Repeated short rings: Power supply issues.

No sound, no display: Power issue.