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:

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

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Computer Hardware
You have just installed a new internal PCI modem on you desktop. It will not dial out. what is the problem?

the phone line is plugged into the line-in port on the modem card
None of these
the phone line out of the wall is plugged into the phone port on the modem card
The port speed is set too high
the modem has not been set up in control panel properties

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