Why does the computer suddenly go black when in use?

The graphics card configuration is too low! I have a class is the case!

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) The machine is infected with CIH virus, and the BIOS is refreshed destructively;

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.

The graphics card is broken, you check the graphics card, try it, it doesn't work, you are changing the graphics card.

Your hard drive has a problem area or a memory crash.

The reasons for the sudden black screen of the computer are as follows:

1. The refresh rate of the monitor is too high.

Solution: Restart the computer and press F8 to jump to the advanced startup page. Select "Safe Mode", right-click on the desktop, select "Properties", then click on the Yuyou ruler settings tab, Gaoqing Advanced, Monitor, and turn it down after seeing "Screen Refresh Rate".

2. The graphics card driver is faulty.

Solution: Enter safe mode and reinstall the driver of the graphics card.

3. The computer is infected with a virus.

Solution: In safe mode, use anti-virus software to check and kill viruses.

4. Poor contact of computer parts leads to black screen.

Solution: Check that the computer parts (monitors, electrical grinders or cables, graphics cards, etc.) are firmly and reliably plugged into the host interface.

The reasons for the sudden black screen of the computer are as follows:

1. The refresh rate of the monitor is too high.

2. The driver with the card in the display hall is faulty.

3. The server computer is infected with a virus.

4. Poor contact of computer parts leads to a black screen.

Dear friends, the computer suddenly blacks out in use is a power supply or motherboard failure: If the monitor is black, you find that the computer chassis has stopped running, and the monitor is black, and the display screen is black and then prompts "no signal", then you can basically discharge the problem of the display, first check whether the power socket is loose, if it is not loose, try to turn on it again, if the computer can not be turned on normally, but open the case to see that the power indicator on the motherboard is on, then it is possible that the motherboard or the power supply is faulty. The failure of these two components, the most common is the capacitor bulging, some low-configuration power supplies and motherboards use poor quality of capacitors, if the computer works for a long time, or long-term voltage instability, it is easy to cause capacitors to bulge.

If it is not a particularly big problem, the general computer company can be repaired, if it is determined that it is caused by the capacitor bulging, the capacitor can be replaced directly, and the maintenance ** is about dozens of yuan. However, if it is damaged in other areas, it may be necessary to replace the power supply or motherboard to fix it.

Causes and solutions to the sudden black screen of the computer:

1. If the power supply is insufficient due to aging, replace the high-power power supply and restart the computer.

2. The internal heat dissipation of the processor, graphics card or chassis is poor, and the dust on the relevant inspection and monitoring heater in the chassis is cleaned.

3. The gold finger of the memory and graphics card is partially oxidized, wipe the gold finger of the graphics card and memory stick with an eraser, replace the slot and reinstall it.

4. When the motherboard battery runs out, replace it with a new battery and restart the computer.

5. The wiring of the power interface is unstable, and the power cord is re-plugged.

If it is a desktop, this situation is likely to be a problem with the memory module, you can unplug the memory module and carefully wipe the gold finger and memory slot of the memory module with a toothbrush, and try it a few more times.