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Upgrading and Repairing PCs, 21st Edition by Scott Mueller

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Chapter 20. PC Diagnostics, Testing, and Maintenance

PC Diagnostics

No matter how well built your PC is and how well written its software, problems can occur. Diagnostic software can help troubleshoot problems when your computer malfunctions or you suspect problems with an upgraded component or an entirely new system built from scratch. This chapter examines several types of diagnostic software, including the built-in POST (power-on self test) as well as commercial and open-source diagnostic software.

You also might find that your system problems are caused by a hardware malfunction and that you must open the computer case to perform repairs. This chapter examines the tools and testers used to upgrade and repair PCs—both the basic items every ...

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