A user calls the help desk about a 4K monitor that will not output an image from a desktop. The monitor was working previously but now shows a black screen with a message stating a signal is not detected. The desktop is connected via HDMI, and the monitor has an empty DVI port. Which of the following steps should the technician perform FIRST? (Choose two.)


A. Check the version of the HDMI cable.
B. Check the input source.
C. Set up the desktop for DVI.
D. Replace the HDMI cable.
E. Install OS updates.
F. Initiate a system restore.