Suddenly it's dark, and then it's on again. What's the reason? You know, simple, help me sum up what causes it? Save your long words! No patience to read!
Graphics card, graphics card, I suggest you reinstall the video card driver to try
Check the card capacitor. Check whether the internal display.
Fault cause analysis and elimination:I. monitorBecause the display itself cannot work normally caused by the black screen, such as power line display problems, bad contact plug (Note: the two are possible), the power switch is broken, the internal circuit fault display.Two. Signal lineConnect the 15 pin D plug PC machine using the display, which is the first 13,14 pin line field synchronous signal display, by judging the two signal is to decide whether to open the filament and the high power supply path, and the two signal to the signal through positive and negative polarity combination and line frequency different as the display signals model. If the line signal two is missing, the power indicator of the monitor is green, but there is no image display. If all is missing, the power indicator of the monitor is orange, and no image is displayed. For the D plug this mainly to check whether the display signal line broken needle, needle needle or crooked, and internal signal line break. The solution is to replace the high quality signal cables.Our power management in a computer CMOS settings there is a "Video off Method" "V/H SYNC+BLANK, Blank Screen, DPMS" three options, which is the first choice for a graphics output signal to control the display power saving mode.Three. Video cardsThe most directly associated with the display is the video card, if the graphics card does not send a signal or a signal can not be sent, then the display will not be lit. In actual use, the graphics card and the motherboard is not compatible with the signal output socket contact card is bad or loose, there is damage card, graphics card and the motherboard AGP slot contact is not good, all these will cause the display does not light. The elimination of such failures, you need to be careful and patient, and seriously check the video card and the motherboard contact, whether there is contact instability. For incompatible situations, they can only be judged by experience and data.
