Original post by: david ,
Hi Alan, In the interest of thoroughness, have you tried these troubleshooting techniques? 1 Plugging your Mac Mini into a different display. 2 Plugging your Mac Mini into a different outlet. Did any lights on the Mac mini itself come on? If so, I would suggest trying to boot into the recovery partition, or a network image. To this with your Mac Mini, Click the Power Button while Holding down the command + R keys, Keep holding down Command + R until an image appears on the screen. If you are able to boot into recovery, open Disk Utility and check your hard drive is mounted and recognized. It may be a good idea to try reinstalling your Mac operating system. If no image appears, Send it in to Apple, at worst they will give you a free diagnostic of the device. Hope this is helpful!