HP 402 G1 manual Interpreting Post diagnostic front panel LEDs, Activity, Computer on None

Table 10-1Numeric Codes and Text Messages (continued)

Control panel message	Description	Recommended action
		3.	If the error still persists, replace the
			system board.
2239-ME image lock failure	Special system configurations with reduced ME	1.	Reboot the computer.
	firmware image require BIOS control of ME	2.	If the error persists, update to the latest
	firmware upgrading. A failure has occurred
			BIOS version and ME firmware version.
	after the ME firmware update process in which
	the BIOS could not relock the ME firmware	3.	If the error still persists, replace the
	region.
			system board.
2240-ME image unlock failure	Special system configurations with reduced ME	1.	Reboot the computer.
	firmware image require BIOS control of ME	2.	If the error persists, update to the latest
	firmware upgrading. A failure has occurred
			BIOS version and ME firmware version.
	prior to the ME firmware update process in
	which the BIOS could not unlock the ME	3.	If the error still persists, replace the
	firmware region.
			system board.
Invalid Electronic Serial Number	Electronic serial number is missing.	Enter the correct serial number in Computer
		Setup.
Network Server Mode Active and No Keyboard	Keyboard failure while Network Server Mode	1.	Reconnect keyboard with computer
Attached	enabled.		turned off.
		2.	Check connector for bent or missing pins.
		3.	Ensure that none of the keys are
			depressed.
		4.	Replace keyboard.
Parity Check 2	Parity RAM failure.	Run Computer Setup and Diagnostic utilities.

Interpreting POST diagnostic front panel LEDs

This section covers the front panel LED codes as well as the audible codes that may occur before or during POST that do not necessarily have an error code or text message associated with them.

WARNING! When the computer is plugged into an AC power source, voltage is always applied to the system board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to disconnect the power cord from the wall outlet and allow the internal system components to cool before touching.

NOTE: If you see flashing LEDs on a PS/2 keyboard, look for flashing LEDs on the front panel of the computer and refer to the following table to determine the front panel LED codes.

Recommended actions in the following table are listed in the order in which they should be performed. Not all diagnostic lights and audible codes are available on all models.

Table 10-2Diagnostic front panel LEDs and audible codes

Activity	Beeps	Possible Cause	Recommended Action
White Power LED On.	None	Computer on.	None

White Power LED flashes every	None	Computer in Suspend to
two seconds.		RAM mode (some models
		only) or normal Suspend
		mode.

None required. Press any key or move the mouse to wake the computer.

100 Chapter 10 POST Error Messages