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When a user first turns on a PC, the performance is fine, but the PC becomes slower the longer it is used. The PC is also experiencing random system crashes. Which of the following is most likely failing?
Correct Answer: B
A failing power supply can cause random system crashes and degraded performance as it struggles to maintain a consistent voltage, especially as the system demands increase over time. The CMOS battery only affects system time and settings, while the video card typically causes display issues rather than system-wide crashes. System memory issues often result in specific errors or performance issues rather than gradual slowdowns. CompTIA A+ Core 1 objectives highlight troubleshooting power supply issues as part of hardware and system maintenance.