After installing a new graphics card, there is no screen on the screen?

.Observation: First, check whether there is a problem with the wiring, and whether the power connector in the motherboard has been connected (especially the +12V power connector near the CPU).

Check that the graphics card has an auxiliary power connector and that it is plugged into a power cable. Observe whether there are obvious fault marks on the surface of each board.

Minimal system method: that is, to retain the least number of accessories of the main unit:

The motherboard, CPU, memory, graphics card, power supply, and other accessories are not connected. If it can be turned on normally, then connect the rest of the accessories in turn (do not connect when the machine is powered on) until there is a time when it cannot be turned on normally, so as to find the root of the problem.

iii. Substitution: If the above methods still can't boot up normally after trying, you can try the replacement method (if you have the conditions). On the basis of the minimum system method, some key accessories can be replaced, such as memory modules, graphics cards, motherboards and power supplies.

1. Check whether the discrete graphics card needs an external power supply, if so, please connect the independent power supply, insufficient power supply will also lead to no response.

2. Check whether the signal cable is connected to the independent graphics card interface, and it is best to replace it with a new signal cable.

3. Whether the discrete graphics card is correctly installed on the motherboard, you can replug and unplug the graphics card, clean the gold finger of the graphics card, and the PCIe*16 graphics card slot of the motherboard.

4. Whether the rated power of the power supply is with a dynamic graphics card, and the power supply needs to be at least 350W or more when using a separate graphics card.

Can't be sure if it's a broken monitor or a broken graphics card.

The computer has a black screen.

is a relatively easy phenomenon, especially in some older or assembled computers. There are many reasons for a computer black screen failure, for example, a broken display, a damaged motherboard, a graphics card.

Damaged, poor graphics card contact, damaged power supply, damaged CPU, etc.

1. The common reasons are:

1. The power of the power supply is insufficient.

The lack of power from the external power supply will cause some old monitors or some monitors with high power consumption to not boot properly, which is one of the reasons why the display itself fails and causes the black screen failure. The external power supply voltage is unstable, too high or too low can cause the monitor to not work properly.

2. The switch circuit is damaged.

Display switch circuit failure is the main cause of display black screen failure. Simple ones such as power switch damage such as internal short circuits, common ones such as switch tubes.

damage or damage to its peripheral circuit components (lamps), etc.

3. The output circuit of the line is damaged.

The failure of the output circuit or CRT and its power supply circuit is also the main cause of the black screen failure of the display. In particular, the damage to the high-voltage packet has led to black screen failures that appear more frequently in certain brands of monitors that have been used for many years or are of poor quality.

2. Solution:

1. The display screen is "black" and the power indicator is not lit, and most of these faults are the faults of the display itself.

First of all, check whether the power cord of the monitor is properly connected, whether the power plug is in good contact with the 220V AC socket, and whether the power switch of the monitor is turned on. In confirmation 220V AC.

If you give the monitor inside correctly, it can be judged that the monitor is faulty, and it is recommended that the monitor be replaced.

2. The fault phenomenon of "black screen" of the display and the power indicator light is more complicated to locate, and the fault may occur in the display and display card.

motherboard or signal cables, etc.

When detecting, the brightness and contrast are adjusted first.

knob, observe whether there is a change in brightness and darkness on the screen, and eliminate the phenomenon of turning off the brightness and contrast and "black screen".

If the screen of the knob to adjust brightness and contrast is still "black screen", you should check whether the signal cable from the host to the display is properly plugged in, and whether there is any broken end or disconnection fault; After confirming that the signal cable is in good condition, perform a POST (Power on Self Test) test.

POST detection is the process in which the computer automatically starts to execute POST diagnostics to check whether the computer system parts are normal or not every time the power switch is turned on.

As soon as a problem is identified during the inspection, the operator is provided with an error message or a series of beeps. In the fault of the "black screen" of the display, people cannot see the screen information detected by the post, but the location of the fault can be judged by a series of beeps.

There are several possibilities:

1. If the graphics card interface and data cable are plugged in, the data cable can be re-plugged.

2. If you have problems installing the graphics card, you can try to reinstall it to ensure that the installation is correct.

3. Problems with the graphics card itself, such as the graphics card is broken, the graphics card does not match the motherboard, and it is not supported.

Video card, graphics card, also known as graphics card, is one of the most basic configuration and most important accessories of a computer.

As an important part of the computer host, the graphics card is a device for the computer to convert digital-to-analog signals, and undertakes the task of outputting and displaying graphics.

The graphics card is connected to the motherboard of the computer, which converts the digital signal of the computer into an analog signal for the display of the display, and the graphics card still has image processing capabilities, which can assist the CPU to work and improve the overall running speed.

For people who are engaged in professional graphic design, graphics cards are very important. The leading manufacturers of graphics chips for civil and military graphics cards include AMD (Supermicro Semiconductor) and NVIDIA (Nvidia). Today's TOP500 computers all contain graphics card computing cores.

In scientific computing, graphics cards are referred to as display accelerator cards.

The core graphics card is a new generation of graphics processing core of Intel products, and unlike the previous graphics card design, Intel integrates the graphics core and processing core on the same substrate with its advanced technology in the processor process and new architecture design.

Constitute a complete processor. This design integration of the intelligent processor architecture greatly reduces the data turnaround time between the processing core, graphics core, memory and memory controller, effectively improves the processing performance and greatly reduces the overall power consumption of the chipset, helps to reduce the size of the core components, and provides more options for the design of notebooks, all-in-one computers and other products.

1. If there is no compatibility between the motherboard and the graphics card, it can be lit as long as the interface is the same.

2. Check whether the signal cable of the display is connected to the output interface of the graphics card, and if it is connected correctly, replace a cable with a little bit of ***.

3. It may also be caused by poor contact between the graphics card and the motherboard, and the gold finger part should be completely in contact with the PCI slot of the motherboard when the graphics card is reinserted and unplugged.

4. The display signal source should be switched correctly, and some monitors have an auto icon in the lower right corner, click down.

5. If the graphics card has an auxiliary power supply cable, it is recommended to use some brand power supplies with good quality and large power consumption.

If the above methods still don't light up, it is recommended to contact the seller to replace a graphics card.

If the above is all right, then the discrete graphics card is broken, it is estimated that you will buy a second-hand one, go and replace it with a new one!

Make sure there are no problems with the graphics card installation, wiring, power supply, etc. Then turn it on and try it. Drive!

Did you connect the monitor cable to the newly installed discrete graphics card?