System Diagnostics and Troubleshooting108
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; 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 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 on-screen display menu.
2. Go to the HP Support Web site and check for an
updated display driver.
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
adocument.
Table 5-7 Display Problems (continued)
Problem Cause Solution
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