Beep Codes - HP XM600 - Kayak - 128 MB RAM Handbook

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Beep, POST, and Error Codes

Beep Codes

If an error occurs during the POST, which prevents the PC Workstation from
starting, and before the display device has been initialized, a series of beep
codes are issued. Beep codes indicate that a fatal error has occurred and can be
reported one after another if there is more than one detected error. In this case,
the first detected error is the most important.
These codes are useful for identifying the error when the system is unable to
display the error message.
Beep, POST, and Error Codes A-1