I have a Sony Vaio laptop from a friend. It has a weird display problem. The colours are all wrong - pinks, blues greens, text is indistinct, swirly coloured lines prevent the screen content being read easily.
If I connect an external monitor, the display on that is fine. This suggests that the mobo/GPU is fine.
An odd twist is that, if I start up a CMD screen, THAT part of the display is fine on the laptop screen - a rectangle window of clarity on a desktop of swirly, miscoloured screen. Odd.
If I THEN plug in the external monitor the display is still ok on the external but the CMD screen THEN takes on the same faulty display characteristics of the rest of the screen. The CMD windows returns to normal if I disconnect the external mon.
Any pointers? I'm guessing inverter or bad connector but, before I strip it down, any thoughts?