Plug a keyboard into the Raspberry and press the "Ctrl+Alt+T" keys and type the following command "sudo crontab -e".
Press the "A" key and at the bottom the word "-- INSERT -- should appear"
Enter the command: "0 8 * * * /sbin/reboot" (0 = minutes 8 = time)
Press the "Esc" key and then type the command: ":x!" and press "Enter".
Type the command: "sudo /etc/init.d/cron restart" and press "Enter"
Ready. Your machine is set to restart every day at 8 a.m.
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