Computer Hardware
You run a super wing-ding diagnostic program on your PC, and it reports that your hard drive, microprocessor, RAM, and video card have seen better days. To resolve this problem you should:

replace everything at once and rerun the diagnostic
check to see if you have a software problem
run an exhaustive memory check
get another copy of the diagnostic program
replace each part one at a time, rerunning the diagnostic before replacing the next part.

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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:

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

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