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

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Computer Hardware
Which would you do first when troubleshooting a faulty monitor?

Power down the monitor, then turn it on again to see if that corrects the problem
Power down the computer, then turn it on again to see if that corrects the problem
Use a meter to check the CRT and internal circuitry for continuity
Check its connections to the computer and power source

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