Turn on, turn off the hard drive: Listen & Download Turn off the hard drive, Turn on .mp3 Error! Change your browser, please! ⇓ Download Turn on, turn off the old computer ⚠ Disc read, CD / DVD drive ⚠ Turning on the laptop, shutting, fan noise ⚠ Jet printer ⚠ Computer keyboard ⚠ Floppy disk reading ⚠ Computer simulated laser ⚠ Photocopy (photocopy) ⚠ General noise, Office work ⚠ Matrix printer ⚠ Computer mouse click ⚠ Opening, closing the laptop cover ⚠ ★★★★★