Solved Dead Display System Starts Fine Imac Intel 21 5 Emc 2428
Chosen Solution Hello! Display went to black. But starts fine. Machine is reacting on change of speaker volume. Starts perfectly in terminal mode (but black). Alt-cmd-R.P reset doesn’t work out. External Monitor attached : nope. Running iMac as an external Monitor on a macbook: negative (maybe wrong cable, or the function for F1, F2 is disabled in sytem prefs.). What couldit be: Display or GPU? Usually, if a graphic card is saying good-bye, you see some errors on the screen before....