I am usually the person which fixes the computers in the house.. and one of them has this problem which I don't know what to do..
First when I turn it on it shows the Windows 7 Ultimate startup and then my laptop screen turns off/goes black.the display only seen on the generic monitor.I tried to use extended and duplicate display, but then the display in my laptop still doesn't appear I don't know what to do I have tried everything and still nothing.
If your computer has a single operating system installed, press and hold the F8 key as your computer restarts. You need to press F8 before the Windows logo appears. If the Windows logo appears, you'll need to try again by waiting until the Windows logon prompt appears, and then shutting down and restarting your computer.
You can try restoring the computer to a checkpoint prior the the problems inception.