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Hi, I got 2 imacs 27 inch with a problem. The imac’s are starting with a black screen and give only some fan spin. When i haven’t install the ram the imac didn’t beep. When i unplug the graphics card and start without the ram it’s beeping. Is it a graphics card problem or is it another part? And when it is the graphic card is reflow enough to get him alive? Lars
Look at the diagnostics LEDS on the logic board and tell us what they are showing. Also when you say you get beeps, the number of those beeps is important. How to find and read the Diagnostic LEDs
