Hi Bebop

Sounds like hardware problem to me too. I would try switching to the external monitor only and not not using dual monitor setup. To switch or alternate between built in screen and external monitor is usually the function (Fn) key and the F8 (or some other f# key...should have a picture of the screen on it).

Also try to shine a flashlight on the laptop screen. If you can make out the desktop illuminated by the flashlight, that would indicate a bad backlight on the laptop. If that's the case, it's probably better to go for a new laptop than repair.

Good Luck

C_K