Solving Display Problems

If you encounter display problems, see the documentation that came with the monitor and to the common causes and solutions listed in the following table.

Table 8-5Solving Display Problems

Blank screen (no video).

Cause	Solution

Monitor is not turned on and the monitor light is not on.	Turn on the monitor and check that the monitor light is on.

Bad monitor.	Try a different monitor.

The cable connections are not correct.	Check the cable connection from the monitor to the computer
	and to the electrical outlet.

You may have a screen blanking utility installed or energy	Press any key or click the mouse button and, if set, type your
saver features are enabled.	password.

System ROM is corrupted; system is running in Boot Block	Reflash the system ROM with the latest BIOS image.
Emergency Recovery Mode (indicated by eight beeps).

You are using a fixed-sync monitor and it will not sync at the	Be sure that the monitor can accept the same horizontal
resolution chosen.	scan rate as the resolution chosen.

Computer is in standby mode.	Press the power button to resume from standby mode.
	CAUTION: When attempting to resume from standby
	mode, do not hold down the power button for more than four
	seconds. Otherwise, the computer will shut down and you
	will lose any unsaved data.

Monitor cable is plugged into the wrong connector.

Systems may have a monitor connection on both the motherboard or an add-in card. Try moving the monitor connection to a different connector on the back of the computer

Monitor settings in the computer are not compatible with the monitor.

1.In Windows 7 Control Panel, under Appearance and Personalization, select Adjust screen resolution.

2.Use the sliding control to reset the resolution.

Monitor is configured to use an input that is not active.

Use the monitor's on-screen menu controls to select the input that is being driven by the system. Refer to the monitor's user documentation for more information on the on- screen controls and settings.

Blank screen and the power LED flashes Red five times, once every second, followed by a two second pause, and the computer beeps five times. (Beeps stop after fifth iteration but LEDs continue flashing.)

Cause	Solution

Pre-video memory error.	1.	Reseat DIMMs. Power on the system.
	2.	Replace DIMMs one at a time to isolate the faulty
		module.
	3.	Replace third-party memory with HP memory.
	4.	Replace the system board.

HP Pro 6305 C1E21UT#ABA manual 5Solving Display Problems, Blank screen no video Cause Solution

Models: Pro 6305 C1E21UT#ABA E3S36UT#ABA E3S33UT#ABA