9.7. Answers to Review Questions

  1. A, B. Two helpful things to try are toggling the video output function key (usually Fn+F8) and plugging an external monitor into the laptop. Removing the display is possible but not recommended. Powering the system off and back on isn't likely to correct the problem.

  2. C. Discolored areas on the board are often caused by overheating. This can be the result of power surges.

  3. B. A valid working directory is not a common problem faced in troubleshooting Windows and applications. An invalid working directory is a common problem.

  4. C. Every computer has a diagnostic program built into its BIOS called the power-on self-test (POST). The BIOS is the software stored on the CMOS chip. DNS is Domain Name Service, which in networking ...

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