HP xw4300 Service And Technical Reference Manual page 108

Table 5-7 Display Problems (continued)
Problem
High-pitched noise coming from
inside a flat panel monitor.
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.)
Certain typed symbols do not
appear correct.
108 System Diagnostics and Troubleshooting
Cause
Brightness and contrast settings
are too high.
Flat panel monitor's internal
digital conversion circuits might
be unable to correctly interpret
the output synchronization of the
graphics card.
The font you are using does not
support that particular symbol.
Solution
Lower brightness and contrast settings.
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.
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.