HP VA799UT 799UT#ABA, Z400 H2D81US manual Solving display problems, 5Display problems

Solving display problems

Table 6-5Display problems

Problem Cause Solution

Blank screen (no video).

The cable connections are not	Verify the cable connections from the monitor to the
correct.	workstation and to a working electrical outlet.
The monitor is off.	Turn the monitor on (LED is on). You might need to refer
	to the monitor manual for an explanation of LED signals.
Screen blanking utility installed	Press a key or the mouse button and, if set, enter your
or energy saver features	password.
enabled.
System ROM is bad; system is	Reflash the ROM using a SoftPaq.
running in FailSafe Boot Block
mode (indicated by 8 beeps).

	Fixed-sync monitor does not	Verify that the monitor can accept the same horizontal scan
	sync at the resolution	rate as the resolution specified.
	specified.
	Computer is in Hibernate	Press the power button to resume from Hibernate mode.
	mode.
	Workstation monitor settings	1.	When you see Press F8 in the bottom-right corner of
	are not compatible with the		the screen, restart the workstation and press F8
	monitor.		during startup.
		2.	Using the keyboard arrow keys, select Enable VGA
			Mode and then press Enter.
		3.	For Windows, double-click the Display icon in the
			Control Panel and then select the Settings tab.
		4.	Use the sliding control to reset the resolution.
The display works properly during	The display settings in the	1.	For Windows, restart your workstation in VGA mode.
the POST but goes blank when the	operating system are	2.	After the operating system starts, change the display
operating system starts.	incompatible with your
	graphics card and monitor.		settings to match those supported by your graphics
			card and monitor.
		3.	Refer to your operating system and graphics card
			documentation for information about changing display
			settings.
Power LED flashes red 6 times	Prevideo graphics error.	For systems with a graphics card:
(once every second), followed by a		1.	Reseat the graphics card.
2–second pause, and then the
workstation beeps 6 times.		2.	Replace the graphics card.
		3.	Replace the system board.
Monitor does not function when	Monitor without Energy Saver	Disable the monitor Energy Saver feature.
used with Energy Saver features.	capabilities is being used with
	Energy Saver features
	enabled.
Dim characters	The brightness and contrast	Adjust the monitor brightness and contrast controls.
	controls are not set properly.
	Cables are not properly	Verify that the graphics cable is connected to the graphics
	connected.	card and the monitor.

ENWW Troubleshooting scenarios and solutions 123