单选题A user is reporting a loud grinding sound when the machine is powered on. The machine loadsinto windows and the user does not notice any performance issues. Which of the following is the MOST likely cause of the noise?（）APowersupplyfailureBBadHDCBadfanDFaultyCD-Rom
单选题
A user is reporting a loud grinding sound when the machine is powered on. The machine loadsinto windows and the user does not notice any performance issues. Which of the following is the MOST likely cause of the noise?（）
A
Powersupplyfailure
B
BadHD
C
Badfan
D
FaultyCD-Rom
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