Solved Replaced Hard Drive Black Screen Wrong Install Disc Imac

Chosen Solution

hard drive works,put in wrong disc and will not eject.Screen is black and beeps about every 3 seconds.

You don’t have your RAM in right either… that’s the beeping and failure to start. Go over reassembly again. Holding down the space bar or mouse at startup should eject the disk unless it’s jammed or a micro disk. If this Answer is helpful please remember to return and mark it Accepted.

After reseating your RAM, hold down the mouse button on restart to eject the disk.