Screen is dark except thin white line at the bottom
All of a sudden the display of my MBP does not work properly anymore. The computer powers up ok, but the display stays dark with a thin white line at the bottom of the display. The white Apple logo is lit. I can connect an external display, like my iMac27, and operate the MBP from its own keyboard and trackpad; all seems to work well except the screen. I have tried PRAM and SMC resets, but without success. Grateful for any advice folks can give me.
Is this a good question?