Computer LCD display patterns, dark look more obvious, the monitor screen up, press and eat, when the pattern will disappear, and this is how ah?
There are several possible, I worked at Toshiba information machine company in a notebook computer assembly is to look at the screen to detect whether water ripples, most of the reason is the data line not connected, similarly, in the liquid crystal display, a part is the interference from the power supply, to see whether the filter capacitor is deformed, the other is internal wiring loose.
There are 3 possible areas to judge:1. video card problem(re insert, clean the gold fingers, the fan is normalUpdate driver, you can download the driver wizardIf it doesn't work, you'll have to change it free during the warranty period2. connection problem (re insert, check VGA or DVI interface)3., monitor problems (check the electrical socket is energized. If convenient, then connect to other computers to see whether it is normal)A key restore. If you do not prepare the system disk, CD-ROM can be used. Start the computer, press the Del button, set up in BIOS as CD-ROM boot, insert the system disk, and then restart, basically completed automatically according to the steps
This is basically your graphics card or memory there is a quality problem, or memory speed does not match. Try changing the display card. If it is later added to the graphics card, you must pay attention to the best purchase and the original display card exactly the same film.The display shows wave interference or shows a snowflake pattern; what you see may be caused by the ripple effect of the display. Because the video signal has been changing, the problem of video ripples is difficult to solve. The scan ripple depends on the horizontal sweep rate (refresh rate), and this can be reduced by selecting the right frequency. At present, there are some high-end display set with advanced elimination of ripple distortion function. For a display without this function, ripple effects can be reduced by adjusting resolution.Computer wiring and common faults
