[Edit: See my last post] Hello, Been using my display since i got my mac pro in 2009, and now it won't turn on. The USB passthrough works, but it doesn't "light up". 15 minutes ago, it just flickered after powering up and never worked since. If I force a parameter RAM reset, the display flickers on and off very quickly (screen is pure white), but doesn't work after that. So I know that the LEDs are fine, but why then doesn't it work? Loa P.S. The GPU is fine, I tested it with my TV and it works. This is a PC HD6870, and the display is plugged there usually. I tried using my old GT120 (that is not usually used) but it doesn't work in that card either.