Problem
Cause
Solution
Power LED flashes red 6
times (once every
second), followed by a 2-
second pause, followed
by 6 beeps.
Prevideo graphics error.
Try these solutions in this order:
●
Reseat the graphics card if using nVidia graphics; reseat
the processor if using Intel HD Graphics.
●
Replace the graphics card if using nVidia graphics or
replace the processor if using Intel HD graphics.
●
Replace the system board.
Processor does not support
graphics output and no discrete
graphics card is installed.
Either:
●
Install a processor with Intel HD Graphics.
●
Install a supported graphics card.
Dim characters
The brightness and contrast
controls are not set properly.
Adjust the monitor brightness and contrast controls.
Cables are not properly connected.
1.
Verify that the monitor cable is securely connected to the
computer and the monitor.
2.
Verify that internal Rear IO DP/LAN cable is connected to
the system board and the Rear I/O board:
a.
Open the computer.
b.
Verify the Rear IO DP/LAN Cable is connected to
CON6701 on the system board and J16 on the Rear
I/O board (on the left bottom side).
Blurry video or requested
resolution cannot be set.
If the graphics controller was
upgraded, the correct video drivers
might not be loaded.
Install the video drivers included in the upgrade kit, or
download and install the latest drivers for your graphics card
from
http://welcome.hp.com/country/us/en/support.html
.
Monitor cannot display requested
resolution.
Change the resolution.
The picture is broken up,
rolls, jitters, or flashes.
The monitor connections might be
faulty, or the monitor might be
incorrectly adjusted.
1.
Verify that the monitor cable is securely connected to the
computer and the monitor.
2.
Verify that internal rear IO DP/LAN cable is connected to
the system board and the rear I/O board:
a.
Open the computer.
b.
Verify the rear IO DP/LAN cable is connected to
CON6701 on the system board and J16 on the rear
I/O board (on the left bottom side).
Monitor must be degaussed.
Degauss the monitor.
High pitched noise
coming from inside a
flat-panel monitor.
Brightness and contrast settings
are too high.
Lower brightness and contrast settings.
Fuzzy focus; streaking,
ghosting, or shadowing
effects; horizontal
scrolling lines; faint
vertical bars; unable to
center the picture on the
screen (flat-panel
monitors using an analog
VGA input connection
only.)
Flat-panel monitor’s internal digital
conversion circuits might be unable
to correctly interpret the output
synchronization of the graphics
card.
1.
Select the monitor’s Auto-Adjustment option in the
monitor’s onscreen display menu.
2.
Manually synchronize the Clock and Clock Phase onscreen
display functions.
Troubleshooting scenarios and solutions
59
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