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You are troubleshooting a malfunctioning notebook computer system. The user has indicated that the LCD screen suddenly became dark and difficult to read while they were downloading a large file through the wireless network while the system was plugged in at their desk. You have checked the system and determined that the backlight has stopped working.

Which of the following are the MOST likely causes? $($Select two.$)$

The cold cathode fluorescent lamp $($CCFL$)$ has burned out and needs to be replaced.

The wireless network card is emitting radio signals that interfere with the backlight, causing it to stop functioning.

The inverter in the LCD assembly has malfunctioned.

Malware was installed as part of the download that targeted the backlight circuitry.

The extended download placed high demands on the system DC power, causing the BIOS to shut off the backlight.