Turning on the laptop, fan noise, shutting down:
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Opens, closes the CD / DVD tray
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Floppy disk reading
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Computer keyboard
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Bios, Sound signal of a bios computer
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Removed, The USB flash drive is inserted
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Opening, closing the laptop cover
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Computer interface, signal read information
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Computer interface, signals
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Room noise, read, write, Hard disk
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Pressing a keypad, input error sound
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Double click computer mouse
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Repeatedly pressing a computer mouse
★★★★★