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Anonymous users2024-02-08One. Display.
The black screen is caused by the display itself and cannot work normally, such as the power cord of the monitor is faulty, the power plug is in poor contact (note: both ends are possible), the power switch is broken, the internal circuit of the monitor is faulty, etc.
Two. Signal lines.
The 15-pin D-shaped plug connection mode used by the display used by the PC, the 13th and 14th pins are the line field synchronization signal, and the display decides whether to open the filament and the high-voltage power supply path by judging whether these two signals are present, and these two signals are used as the transmission signal of the display mode through the positive and negative polarity combination of the signal and the difference in the line frequency. If there is a gap between the two signals, the power indicator of the display is green, but there is no image display; If it is completely absent, the power indicator of the monitor is orange and there is no image display. For this case, the main check whether the D-shaped plug of the display signal cable has broken pins, crooked needles or short pins, and then there are broken wires inside the signal cable.
The solution is to replace a good quality signal cable.
In the power management of the CMOS settings of the computer, there is a "video off method", in which there are three options of "V h sync+blank, blank screen, dpms", the first of which is to select the output line field signal of the graphics card to control the power saving mode of the display.
Three. Graphics. The most directly related to the display is the graphics card, if the graphics card has no signal sent or there is a signal that cannot be sent, then the display will of course not light up.
In actual use, the graphics card is not compatible with the motherboard, the signal output socket of the graphics card is not in good contact or loose, and then the graphics card is damaged, and the graphics card is not in good contact with the AGP slot of the motherboard, which will cause the display to not light up. For the elimination of such faults, you need to be careful and patient, carefully check the contact between the graphics card and the motherboard, and whether there is any unstable contact. Incompatibilities can only be judged based on experience and data.
Four. Power supply. Everyone always spends more money on CPU and memory when configuring the machine, but always closes the door on the power supply.
But the power supply is the power source for all the parts of the computer, if it goes wrong, will the other parts still work? As we all know, if the power supply fails, the host will have a continuous short "beep" alarm and the display will not light up. However, there were times when there was no word, and in the end, it turned out to be a problem with the power supply.
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Anonymous users2024-02-07Memory problems, the gold finger on the memory will oxidize after a long time, wipe it with an eraser, and then reinstall it.
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Anonymous users2024-02-06Unplug the power cord from the computer case, then press the power button of the host several times, then plug in the power cord of the case and try it on.
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Anonymous users2024-02-05Which finally your computer is not normal boot up, enter the system... If it is a statement, which is the normal boot indicator light on.
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Anonymous users2024-02-04Summary. As long as the computer is connected to the source, the light of the motherboard is on, and there are several situations when the machine cannot be turned on.
1: The power cord of the computer host is not connected.
2: The monitor switch is not turned on.
3: Poor contact between the monitor power supply or the monitor data cable.
The computer is on but won't turn on.
The computer motherboard light is on, indicating that there is electricity, as long as the computer is connected to the source, the motherboard light is on, and the situation of the spring blind machine is as follows: 1: The power cord of the computer host is not connected well 2: The switch of the display town finder is not turned on 3:
Poor contact between the monitor power supply or the monitor data cable.
Hello, you can see if there are any of the following reasons.
You check it out. Good.
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In the case of what you said.
Most likely, it's an issue with the graphics card. >>>More