HP 520 5/XX, 525 5/XX manual 114

4 Summary of the HP/Phoenix BIOS

HP/Phoenix BIOS (BIOS version: GJ.07.xx)

Message	Corrective Action and/or Explanation
Other	An error message may be displayed and the PC may “hang”
	for 20 seconds and then beep. The POST is probably
	checking for a mass storage device which it cannot find and
	the PC is in Timeout Mode. After Timeout, run Setup to
	check the configuration.

Beep Codes (BIOS version: GJ.07.xx)

If a terminal error occurs during POST, the system issues a beep code before attempting to display the error. Beep codes are useful for identifying the error when the system is unable to display the error message.

	Numeric
Beep Pattern	Code	Description
	B4	This does not indicate an error.
		There is one short beep before system
		startup.
	98	Video configuration failure or
		Option ROMs checksum failure
	16H	BIOS ROM checksum failure
	20H	DRAM refresh test failure
	22H	8742 Keyboard controller test failure
	2C	RAM failure
	2E	RAM failure on data bits in low byte of
		memory bus
	30	RAM failure on data bits in high byte of
		memory bus
	46	ROM copyright notice check failure
	58	Unexpected interrupts test failure

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