常见的电脑黑屏的问题以及解决方法解决方法（Common computer black screen problems and solutions, solutions）.docVIP

常见的电脑黑屏的问题以及解决方法解决方法（Common computer black screen problems and solutions, solutions） Why is the computer often black screen? First of all, to confirm that your host has a problem, did not boot when there is no abnormal sound? If the host is normal, may only display no synchronous signal, you should check the graphics card and motherboard contact and connection line and display, often because of these bad contact caused by non synchronous signal. If the host problem, this can be big and small, and your description is not clear, difficult to judge. Better find someone and fix it now Supplement: Display black screen failure is common, often as the boot display no image display, but have heard the host starts when the beep sound; or is used, display a sudden black; also some computer starts normally, but start to appear on a black screen step. Because the monitor once black screen, can not see any hint information, also cant carry on the corresponding processing to solve the problem, generally more headache. Fault cause analysis and elimination: I. monitor Because 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 line Connect 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 interna