What wire lights up the monitor on a PC

[DavidJ35]

Sometimes when I am using my computer, the monitor darkens. Sound and internet seem to be on, b ut the monitor is dark. If I kick the wires underneath the desk, it comes back on. What is the problem?

 

[nhasian]

vga or dvi cable is loose. its the only cable that goes from the computer to the monitor.

 

[DavidJ35]

It is probably faulty power strip. Each individual outlet has its own use. Buy a new one from Tom's Hdwe.