Computer Hardware
Dust in a computer actually increases the size of the magnetic fields inside it. This is not good, so you must occasionaiy dust, I trust. What's the best way to do this?

non-static compressed air
reverse vacuum
blow real hard on the system board
use a lint-free cloth and wipe gently
any small vacuum device

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Computer Hardware
After displaying the directory of a floppy disk, a different floppy is inserted into the drive. The contents of the original floppy continue to display regardless of the director requests on the other floppies placed in the drive. You remove the drive in question and install it into your test system, and it does not exhibit the problem. You should next replace the:

System's floppy drive device driver
System's power supply
Original IDE controller
None of these
Floppy drive ribbon cable

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