HP Dc7100 Troubleshooting Guide - Page 39

Start > All Programs &gt, Accessories > System Tools &gt, Character Map, Problem, Cause

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Troubleshooting Without Diagnostics Solving Display Problems (Continued) Problem Cause Fuzzy focus; streaking, ghosting, or shadowing effects; horizontal scrolling lines; faint vertical bars; or 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 may be unable to correctly interpret the output synchronization of the graphics card. Certain typed symbols do not appear correct. Graphics card is not seated properly or is bad. The font you are using does not support that particular symbol. Solution 1. Select the monitor's Auto-Adjustment option in the monitor's on-screen display menu. 2. Manually synchronize the Clock and Clock Phase on-screen display functions. To download a SoftPaq that will assist you with the synchronization, go to the following Web site, select the appropriate monitor, and download either SP20930 or SP22333: www.hp.com/support 1. Reseat the graphics card. 2. Replace the graphics card. Use the Character Map to locate the and select the appropriate symbol. Click Start > All Programs > Accessories > System Tools > Character Map. You can copy the symbol from the Character Map into a document. Troubleshooting Guide www.hp.com 2-23

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Troubleshooting Guide
www.hp.com
2–23
Troubleshooting Without Diagnostics
Fuzzy focus; streaking,
ghosting, or shadowing
effects; horizontal scrolling
lines; faint vertical bars; or
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 may
be unable to correctly
interpret the output
synchronization of the
graphics card.
1. Select the monitor’s
Auto-Adjustment option in the
monitor’s on-screen display
menu.
2. Manually synchronize the Clock
and Clock Phase on-screen
display functions. To download
a SoftPaq that will assist you
with the synchronization, go to
the following Web site, select
the appropriate monitor, and
download either SP20930 or
SP22333:
www.hp.com/support
Graphics card is not
seated properly or is
bad.
1. Reseat the graphics card.
2. Replace the graphics card.
Certain typed symbols do
not appear correct.
The font you are using
does not support that
particular symbol.
Use the Character Map to locate the
and select the appropriate symbol.
Click
Start > All Programs >
Accessories > System Tools >
Character Map
. You can copy
the symbol from the Character Map
into a document.
Solving Display Problems
(Continued)
Problem
Cause
Solution