HP Book 800CT manual Post Display Codes, Message Possible Cause

Display Codes

There are a number of Power On Self Test (POST) tests that are performed after the Beep Code tests. Failure of one or more of these tests will result in a displayed failure code (such as

03044). It is extremely important not to interpret a failure code immediately as a hardware failure. The failure should be confirmed with a clean boot. A clean boot is defined as pressing the reset button after removing all accessories (including additional memory, floppy drive, modems, PC cards, and printers) and providing a reliable power source. Note, make sure the display is adjusted to be visible.

The following tables lists common PC error messages. Not all of these messages will appear on every model of the OmniBook 800.

Table 3 - POST Display Codes

Message	Possible Cause
CLOCK NOT TICKING CORRECTLY	The real time clock is not ticking.
COLOR/MONO SWITCH INCORRECT	The COLOR/MONO switch on the system
	board is incorrect for the installed
	hardware.
CMOS CHECKSUM INVALID - RUN SCU	CMOS RAM information has been
	corrupted and needs to be reinitialized via
	the System Configuration Utility.
CMOS FAILURE - RUN SCU	CMOS RAM has lost power and needs to
	be reinitialized via the System
	Configuration Utility.
FLOPPY CONTROLLER FAILED	The floppy controller failed to respond to
	the reset command. Power down the
	system and check all appropriate
	connections. It the floppy controller
	continues to fail, you may need to replace
	it.
FLOPPY DISK TRACK 0 FAILED	The floppy drive cannot read track 0 of
	the floppy disk in the drive. Try another
	diskette. If the problem persists, you may
	need to replace the floppy drive.
FLOPPY INFORMATION INVALID - RUN SCU	The drive parameters stored in CMOS do
	not match the floppy drives detected in
	the system.
HARD DISK CONTROLLER ERROR	The hard disk controller failed to respond
	to the reset command. Possible
	solutions: 1) Check the drive parameters.
	2) Power down the system and check all
	appropriate connections. If the problem
	persists, you may need to replace the
	hard disk controller.
HARDWARE INFO DOES NOT MATCH VIDEO	The video adapter type specified in
CARD - RUN SCU	CMOS RAM does not match the installed
	hardware.
KEYBOARD CONTROLLER FAILURE	The keyboard failed the self-test
	command. Check to see if the keyboard
	controller is properly installed. If the
	problem continues, replace the controller.

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