CompTIA A+ 220-902 Question B-65

A user states that when they power on their computer, they receive a “Non-bootable drive” error. The user works with external storage devices to transport data to their computer. The user stated that the computer worked fine the day before. Which of the following should be checked FIRST to resolve this issue?

A. Jumper settings
B. Device boot order
C. PXE boot settings
D. Hard drive cable