So my monitor is not displaying anything...my CPU indicates that PC has started and my keyboard and mouse also on the lights...but my monitor stays blank...before that from yesterday my monitor was blinking...also I want to add that I have a TV card and when I open the TV then it works fine but when I turn it off the monitor goes black again...I m really confused...is it something to do with my PCs GPU or RAM???plz help...also sorry for my english