Computer Hardware
Which is LEAST likely to interfere with upgrading to a newer DOS Version?

ROM BIOS
None of these
Existing backup files
Video controller
Compressed drives

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

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

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