Which of the following would BEST explain the causes of the problem?

A user receives the following error message when powering on a computer:

Hard drive cannot be found.

A technician restarts the computer, and it boots the OS normally. Several days later, the user reports another problem, but rebooting the computer does not resolve the issue. The technician replaces the motherboard, keeping the same CPU, battery, RAM, and hard drive. The user cannot authenticate at the login screen.

Which of the following would BEST explain the causes of the problem? (Select TWO)
A . POST error code beeps indicate RAM failure.
B . The system time is not set correctly in the BIOS
C . The voltage on the coin cell is drained completely
D . UEFI firmware has the Secure Boot setting enabled
E . Capacitors on the motherboard are distended
F . Incorrect settings are booting the wrong device
G . A BSOD error indicates the system is crashing

Answer: C,E