LCDRelated Symptoms

Symptom/Error

Action in Sequence

LCD backlight doesn't work. LCD is too dark.

LCD brightness cannot be adjusted. LCD contrast cannot be adjusted.

Enter BIOS Utility to execute Load Setup Default

Settings, then reboot system.

Reconnect the LCD connectors.

Keyboard (if contrast and brightness function key do not work).

LCD inverter ID

LCD cable

LCD inverter

System board

Unreadable LCD screen Missing pels in characters Abnormal screen Wrong color displayed

Reconnect the LCD connector.

LCD inverter ID

LCD cable

LCD inverter

System board

LCD has extra horizontal or vertical lines displayed.

LCD inverter ID LCD inverter LCD cable LCD

System board

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