Why does my computer suddenly go black during operation? Please, thank you

Admittedly, what my friends said is good, but I put forward different opinions: whether your computer configuration is a bit low, whether there are several accounts logged in, etc., which is also more important.

There are too many boot startup programs, you can use 360 or Optimizer to optimize boot startup.

Black screen? System issues. Or too many things.

You want to kill and kill the virus. With 360. Trojans also check...

1 Some garbage deleted... Don't hang up... Don't do anything that harms the system.

It won't

A black screen is a common phenomenon, especially on older computers or builds. There are many reasons for the failure of a computer black screen, such as a damaged monitor, a damaged motherboard, a damaged graphics card, a poor contact of the graphics card, a damaged power supply, a damaged CPU, etc.

1) The monitor is powered off, or the monitor data cable is in poor contact. In addition, the computer has been used for a long time, and the power cord of the monitor is easy to oxidize and break;

2) There is no power supply to the motherboard;

3) Poor contact or damage to the graphics card;

4) Poor CPU contact;

5) Poor contact of memory modules;

6) Machine infection.

CIH virus, BIOS

is destructively refreshed;

7) Check the plugging and unplugging, if necessary, you can use a rubber to remove the oxide film on the gold finger;

8) If the floppy drive has a floppy disk, many times it will cause the computer to start or restart, and the computer will have a black screen and cannot enter the system. To avoid such situations, it is also possible to cancel the floppy disk boot item in the BIOS.

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. For ordinary computer users, professional knowledge is insufficient, you can follow the following steps to analyze the cause of the failure, so that you can do it yourself.

Start by checking that the contact 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.

If there is no problem with contact, it is best to try a different monitor to make sure that the monitor is fine.

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.

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.

Change to a normal CPU (should be compatible with the tested computer), boot the computer and re-test, if the black screen still appears, you can only change to a motherboard, and the problem should also appear on the motherboard.

A black screen may indicate a serious problem with your computer, and you may wish to eliminate it as described above when the black screen occurs. In the process of treatment, the method of exclusion and substitution should be flexibly applied, and the phenomenon that occurs in a timely manner should be excluded and treatedv

Why does the computer screen go black after booting up, and how to solve it.

There are many reasons why a computer has a black screen, and the common ones are:

Shows poor contact of the data cable;

There is no power supply to the motherboard;

Poor graphics card contact or;

Poor CPU contact and overheating;

Poor contact of memory modules;

poor power performance;

Machine infection. CIH virus, BIOS

is destructively refreshed;

Microsoft black screen, please patch.

Most of these problems are the relationship between the memory and the graphics card, loose or poor contact, just move it or use the eraser to wipe the gold finger of the interface.

The system is operating normally, generally the display or graphics card setting problem, first of all, you set the computer refresh rate as soon as you boot up, reduce the frequency, 17 inches, preferably 1024*768*24

LCD refresh 50Hz

60Hz, CRT display set 75-85Hz, and then return the display to the exit mode.

You look at the cable connecting the monitor to the main unit, and the power cord of the monitor. If there is no signal input on the monitor screen, it is most likely that there is a problem with the power cord, and the host can hear the normal startup sound, which is generally not a problem.

The system resolution is too high, start it from scratch, keep pressing F8 after booting, select VGA mode to enter the system, right-click on the blank space of the desktop, and then set, set the resolution to a low point, such as 800*600

The display is broken, is it LCD? Probably the lamp is burning, otherwise the brightness is adjusted to 0% and the brightness is adjusted. Press the adjustment button, if no adjustment menu appears, it is basically concluded that the monitor is broken.

Look at the description,The host is good,The problem is either the graphics card,Or the monitor, you can connect the host to another computer to check,See if the graphics card is broken, if it's good,That's something wrong with your monitor。

If you can't do it, you'll have to take it for repair.

Check the monitor to see if there is a power supply or if the VGA cable is loose.

If you can hear the sound of switching on and off, it means that the system is fine.

It could be an issue with the display. I used to have a lot of this phenomenon when I was fixing monitors. Either the lamp of the display screen is aging, or the capacitor on the power board has burst out.

You said that it was only three or four months after you bought it, and that should be a problem with the display. If there is a problem with the data, it is recommended to send it for repair and let the maintenance engineer replace it after testing. If you can't figure it out yourself, you can't find it out without special instruments.

1. First see if the monitor and the host graphics card are not in good contact, method: unplug and plug it back in. If it doesn't work, look at 2.

2. Change the monitor to see if the same black screen appears, if it still doesn't work, look at 3.

3. Turn on the computer host, if your graphics card is not integrated, unplug it and plug it back in. No, see 4.

4. Open the control panel, double-click Power Management, and put it in the power supply usage plan"Turn off the monitor"with"Turn off the hard drive"And there is"System standby"are all set to"Never"OK, restart and see if it can be eliminated.

No, look at 5.

5. Reinstall the system to see if it can be eliminated.

If it still doesn't work, it is recommended to find a master or send it to a computer repair station to have a look.

Black screen reason: 1. The temperature of the graphics card is too high.

2. The power supply of the host is unstable.

3. Systemic virus infection factors.

Solution: 1. Graphics card cleaning.

2. Power supply fan cleaning.

3. Reinstall the system.

There are many reasons for black screen failure, such as software conflicts, improper driver installation, BIOS flashing errors, incorrect CMOS settings, etc. In addition, hardware damage caused by malignant viruses (such as CIH) may cause the appearance of black screen failures. When it comes to this kind of failure, if you can consider the cause of the failure, you can solve the fault and know that the other party will get twice the result with half the effort.

More than you described, it is most likely that you have a malicious program in your system, there is a Trojan horse! Because I've also encountered such a situation, or if you kill it with antivirus software first, it is estimated that you can't kill it, even if you reinstall the system, you may be hit.

The safest way is to repartition, then format, and reinstall the system, which is the safest and safest! After all, the win7 flagship is thousands of fast!

There may be a problem with the graphics card. Switch it up.