Laptop screen keeps switching off, so I have plugged in a monitor which has been working fine. I tried to start the laptop screen which I did yesterday but somehow I think I have made the laptop screen the primary screen but it’s all black.
I can bring the curser back onto the monitor no problem but the monitor only has the windows picture on. Nothing else at all to click on to. I have tried F8 but it just opens up on the blank, black screen.