Turn on, turn off the old computer:
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Turn off the hard drive, Turn on
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Laser printer
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Old computer keyboard
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Computer simulated laser
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Computer interface, alarm
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Repeatedly pressing a computer mouse
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Floppy disk reading
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Computer mouse click
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Room noise, read, write, Hard disk
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Computer keyboard
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Fan noise, Turning on the computer, shutting
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Computer interface, signal read information
★★★★★