Sony VAIO VGN-FS660 Notebook "mode simulation stuck" Questions

...stuck in projector or second-monitor hookup without knowing it, could I be in a screen lock mode - I can't figure out which function key might get the computer out of this black screen. thank you Hi ...

...stuck down as this will dissable power up. I have the same problem and believe I have discovered the source of the problem. When I removed the back panel of the laptop, it started up just fine. I ...