I have no idea what happened.
I am typing notes when the laptop screen (I have multiple monitors, the other being a 20-inch LCD monitor) suddenly goes dark and lo and behold, the next thing is the display has transformed into portrait setting.
Recalling a lesson from New Media studies: users become afraid when something goes wrong with their interface, they perceive the last action that they did was the cause of the problem.
And so I frantically hit all the different keys in a desperate attempt to reverse the spell gone wrong. I simply have no idea what I did to make the screen become like this, but I do clearly remember I was typing this:
...computer hardware is an investment
And then I decided, 'costly' should be added, so I go back to revise it.
...computer hardware is a costly investment...
And that's when it happened.
A costly 'investment' indeed. Rather the experience is more like a downward spiral to dereliction with no way of climbing back up :S
Frantic to restore things to normal, I call
Kevin, computer genius. He offered the best solution: System Restore, and everything really restored back to normal, without losing any files which I have been currently working on.