Display panel built-in self-test (LCD-BIST)
About this task
Steps
1. Press and hold the D key and then press the power button.
2. Release both the D key and the power button when the computer begins POST.
3. The display panel begins to display a solid color, or cycling through different colors.
NOTE:
The sequence of colors may very due to different display panel vendor. The user only needs to ensure that the
colors are being displayed correctly without distortion or graphical anomalies.
4. The computer reboots at the end of the last solid color.
Outcome
About this task
The following table shows the outcome of running different types of BIST.
Table 22. BIST outcome
M-BIST
Off No fault detected with system board.
Solid amber Indicates a problem with the system board.
Table 22. BIST outcome
L-BIST
Off No fault detected with system board.
LED error code of [2,8] blinks Amber x2, then pause, then blinks
White x8
Indicates a problem with the system board.
Troubleshooting 85
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