EN-21(DVI Mode)Problems Current Status RemedyNo PictureLED ON · Using OSD, adjust brightness andcontrast to maximum or reset to theirdefault settings.LED OFF · Check the power switch.· Check if AC power cord is properlyconnected to the monitor.LED displaysamber color· Check if video signal cable is properlyconnected at the back of monitor.· Check if the power of computer systemis ON.