What is a signal cable on the computer

[kaushalchinnu]

Hello,
i have setuped all compute r wires but when i on the computer is telling that please checkvsingal cable

 

[teaser]

that is the cable from the video card output on the back of the pc to the back of the monitor......make sure that the connections are secured properly.....in other words....make sure that they are screwed in all the way....