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Dell OptiPlex 990 (Early 2011) User Manual

Page 74

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Code

3-2-2

Cause

Interrupt vector loading failure

Code

3-2-4

Cause

Keyboard Controller Test failure

Code

3-3-1

Cause

NVRAM power loss

Code

3-3-2

Cause

NVRAM configuration

Code

3-3-4

Cause

Video Memory Test failure

Code

3-4-1

Cause

Screen initialization failure

Code

3-4-2

Cause

Screen retrace failure

Code

3-4-3

Cause

Search for video ROM failure

Code

4–2–1

Cause

No time tick

Code

4–2–2

Cause

Shutdown failure

Code

4–2–3

Cause

Gate A20 failure

Code

4–2–4

Cause

Unexpected interrupt in protected mode

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