Macmini 10.4 tried clearing it to use only for Nascar 2003. Lost it all. Now have screen with printed message some I can read "Unable to find driver for this program 10.1" - Kernel version 8.11.0 Wed Oct 20 2007. Have rectangle box with white circle containing smaller black circle. "Hold down restart several seconds" does not work. I have had help from mac friends, etc.Tried several ways to restart holding various keys, no help. Is there a page in my Sad Macs, Bombs, Disasters, Book. Did I kill it? When I do start it up there is the start up sound. Once in a while I will see the Apple Logo but it quickly disappears and the worded screen appears. Thank you for your time and Thank You.