I want to connect the computer to a tv, the tv is a medialine dwil1700. It has a vga input as well as scart, rgb and other connections. I have a vga cable about 15ft long which was to connect the two of them, however when i plug in the cables, the tv briefly flickers and then no picture displays, i know its the computer screen its showing from the colours and thers a light grey box displayed but its just too hard to make out anything else. What might be wrong with it?
