Mac book air No bootable device--insert boot disk and press any

Mac book air No bootable device--insert boot disk and press any
Mac book airの電源をつけたら、「No bootable device--insert boot disk and press any key」
対策:
1)起動時ジャーンの音の直後、オプションキーを押
2-1)pram クリア(起動時、ジャーンの起動音を2回以上(3 sets of chimes)鳴るまでcommand + option + p + r の4つのキーを押す)If there is a chime, try resetting the PRAM:Restart the computer and hold down the command, option, p and r keys = all four at the same time. Keep holding the keys down till the computer has gone through 3 sets of chimes. Release the keys.
2-2)Insert the DVD and restart, while hold down the C key.
3)Just press both (option+command) together , and while u r pressing on them , press respectively r,t,y,u,i,o,p
Then your mac will open normally
Boot CampWindows 7をインストールする時に"No bootable device - insert boot disk and press any key"
1)電源キーを長押しして強制終了
2)optionキーを押しながら起動し、ドライブ選択画面へ
3)"windows"という名前*1のDVDドライブを選択して起動
Windows 7 のみのclean install
http://d.hatena.ne.jp/ishimarum/20120426/1335427675