type of machine: (ie: Laptop or desktop)
Which model: (ie: Macbook, MacBook Pro, iMac, MacMini...)
have you connected another display to see if it is the monitor or logic board?
Most useless response (question?) to a relatively straightforward question. I'm going to go out on a limb and guess that you didn't read the OP's post.
I must not have read it clearly, after all, I had just gotten out of the hospital Monday after having a heart attack Friday... no joke.