I just unplugged the power cord on my second monitor, and it is still detected in CCC and Windows 7, but obviously will not work. You could try this as well to see if that is the case for you: unplug your monitor's power and I bet it will still be detected in CCC and Windows 7.
All the evidence seems to point to your monitor being the problem. It seems to me like it is not getting power. Before trashing the monitor, I would recommend double checking that the power cord is firmly plugged in, both to the power outlet, and to the monitor itself (I had a friend with a similar problem who didn't realize that the power cord also plugged in to the back of the monitor, and it had jiggled loose over time). If that does not help, then I would try a different power outlet.
If the monitor's power light does not come on after that, then probably get a new monitor unless you want to try to have it repaired or something. I don't really know anything about fixing monitors (is it still under warranty or anything?).
You could also test out another monitor if you could borrow one or something to make sure the VGA out works on your card, but it really sounds like the monitor is the problem.
hi... my thosiba lap can be some problem. i don't know that problem.the display some time's three (3) par for 1st part and 2nd part and 3 part in horizondal order .the 1st part go to last and the last part come to 1st part and the center port fixed into normally .the 1st and last parts are changed please tell the problem....