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).
Graphics card is not seated properly or is bad (some models).
Certain typed symbols do not appear correct.
The font you are using does not support that particular symbol.
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.
Sound cuts in and out.
Processor resources are being used by other open applications.
Sound does not come out of the speaker or headphones.
Software volume control is turned down or muted.
Audio is hidden in Computer Setup.
The external speakers are not turned on.
The audio device may be connected to the wrong jack.
External speakers plugged into the wrong audio jack on a recently
installed sound card.
Chapter 6 Troubleshooting without diagnostics
with the synchronization, go to the following Web site,
select the appropriate monitor, and download either
SP32347 or SP32202:
Reseat the graphics card.
Replace the graphics card.
Use the Character Map to locate and select the appropriate
symbol. You can copy the symbol from the Character Map into a
In Windows 7, click Start, select All Programs, select Accessories,
select System Tools, and then select Character Map.
In Windows 10, type ch in the taskbar search box, and then select
Character Map from the list of applications.
Shut down all open processor-intensive applications.
Double-click the Speaker icon on the taskbar, then make sure
that Mute is not selected and use the volume slider to adjust the
Enable the audio in Computer Setup: Advanced > Built-in Device
Turn on the external speakers.
Ensure that the device is connected to the correct jack on the
computer. The rear audio jack output is the green receptacle. The
speakers should be plugged into the line-out jack and the
headphones should be plugged into the headphone jack.
See the sound card documentation for proper speaker connection.
The rear audio jack output is the green receptacle.