|Still...ask you Bro what happened....|
"No Signal, Check Signal Cable" means your monitor is not getting a signal. YOUR MONITOR DOES NOT DETECT AN INPUT SIGNAL FROM THE COMPUTER, not the other way around as you stated.
With the "lines" everywhere on your last monitor, your video card may have been going out.
Better to spend $10-$30 on a cheap video card to check things out than $200-$300 on a new monitor.
Rule #1: Good Computers don't go down.
Rule #2: There is no such thing as a good computer.