#3. Coleco Adam (1983)
The Adam was marketed as the first home computer to come with everything you needed, including a tape drive and a letter-quality printer. The problem? Any media left in the drive would get zapped by a surge of electromagnetic energy when you turned the thing on, erasing all the data on it. And the Adam's power supply was inside the printer, so if the printer was defective (and many were), the computer wouldn't work.
The Cabbage Patch Kids eventually made it into orbit, hitching a ride on the space shuttle in 1985. The Adam never really made it off the ground.