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).
Cause
Solution
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 website, select
the appropriate monitor, and download either SP32347 or
SP32202:
Graphics card is not seated properly or is bad (some models).
1.
Reseat the graphics card.
2.
Replace the graphics card.
Certain typed symbols do not appear correct.
Cause
Solution
The font you are using does not support that particular symbol.
Use the Character Map to locate and select the appropriate
symbol. You can copy the symbol from the Character Map into a
document.
In Windows 10, type
ch
in the taskbar search box, and then select
Character Map from the list of applications.
Solving audio problems
If the computer has audio features and you encounter audio problems, see the common causes and solutions
listed in the following table.
Headset microphone connected to the front is not working or is very quiet.
Cause
Solution
The front Headset connector supports CTIA (Cellular Telephone
Industries Association) style headsets and not OMTP (Open Mobile
Terminal Platform) style headsets. These differ by the
microphone connections.
Make sure that a CTIA style headset is being used or use an OMTP
style headset with a commercially available adapter that converts
an OMTP headset to the CTIA pinout.
Sound cuts in and out.
Cause
Solution
Processor resources are being used by other open applications.
Shut down all open processor-intensive applications.
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Chapter 6 Troubleshooting without diagnostics
