Post Beep Code Descriptions - IBM eServer xSeries 440 Installation Manual

POST beep code descriptions

One beep
Indicates successful completion of POST.
Repeating long beeps
Indicates that a memory error has occurred. Ensure that all DIMMs are correctly
installed.
One long beep and two short beeps
Indicates that a video error has occurred and the BIOS code cannot initialize the video
screen to display any additional information.
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xSeries 440:Installation Guide