My lcd monitor comes on for a second then turns black (off) but the green light is still on. so i unplug the power cable then plug it in again and it does the same thing
Please any advice whatsoever will be appreciated
It looks like your monitor goes on power saving mode because there is no video signal coming in.
First, check if the cable is properly connected to the video output port of the PC.
If it is, please tell us whether the monitor display anything before or you have a new PC build.