Which of the following components could MOST likely cause Mike, a technician, to receive a ‘Nonsystem disk or disk error’ after POST?（）

A. C:\Documents and settings\User1\Desktop
B. C:\Users\User1\Desktop
C. C:\windows\System32
D. C:\Users\User1

A. PCI
B. Mini PCI
C. ISA
D. PCIe 1x

A. ping net
B. ping ipconfig
C. ping localhost
D. ping microsoft.com