A computer boots up with the error "CMOS Checksum Failure." Which of the following components needs to be replaced？（）

A.The CD is defective.
B.The CD is not bootable.
C.The CD-ROM drive is defective.
D.The Boot Sequence is not set in the BIOS to boot first from the CD

A.confirm the repair
B.define the problem
C.document the results
D.simplify the problem

A.back up the system data
B.gather information about the problem
C.try rebooting the system to see if that fixes the problem
D.check the System Error Log or Event Log