I'm preparing to sell a Mini, A re-install using original disks failed (something about Epson printer package was unverified. Did this 4 times). Then I tried restoring from Time Machine and I get the error message, on a darker gray screen, "You need to restart your computer. Hold down the Power button until it turns off, then press the power button again." (in 5 languages!). Now when I turn it on, with or without a disc in the drive, the same message appears every time. So I can't even try anther Restore. Any suggestions?