Turning on the laptop, fan noise, shutting down:
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CD / DVD drive, disc read
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Double click computer mouse
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Repeatedly pressing a computer mouse
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Communication room, computer noise
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Removed, The USB flash drive is inserted
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Write, Hard disk, room noise, read
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Sound signal of a bios computer, bios
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Fan noise, shutting, Turning on the laptop
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Turn off the old computer, Turn on
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Photocopy (photocopy)
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Computer mouse click
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Modem connection, signal, interference
★★★★★