- Joined
- Dec 7, 2013
- Messages
- 26
- Reaction score
- 0
- Points
- 1
- Location
- Trent Bridge Nottingham UK
My 7 year old iMac displays a square black message box with white print upon start up. The message is in several languages and tells me to press the on button to restart the machine. This message appears every time the machine reboots and nothing else will work.