Table
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 | |
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|
|
Driver issue. | 1. | Reboot. |
| 2. | Verify the correct drivers are installed for graphics. |
|
| |
Monitor issue. | Check the monitor on a different computer to verify whether | |
| the issue is with the monitor. | |
|
|
|
Certain typed symbols do not appear correct. |
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|
|
| |
Cause | Solution | |
|
| |
The font you are using does not support that particular | Use the Character Map to locate and select the appropriate | |
symbol. | symbol. Click Start > All Programs > Accessories > | |
| System Tools > Character Map. You can copy the symbol | |
| from the Character Map into a document. | |
|
|
|
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.
Table
Sound cuts in and out.
Cause | Solution |
Processor resources are being used by other open applications.
Shut down all open
Sound does not come out of the speaker or headphones.
Cause | Solution |
|
|
Software volume control is turned down or muted. | |
| sure that Mute is not selected and use the volume slider to |
| adjust the volume. |
|
|
Audio is hidden in Computer Setup. | Enable the audio in Computer Setup: Security > |
| Device Security > System Audio. |
|
|
The external speakers are not turned on. | Turn on the external speakers. |
|
|
The audio device may be connected to the wrong jack. | Ensure that the device is connected to the correct jack on the |
| computer. The speakers should be plugged into the rear line- |
| out jack and the headphones should be plugged into the |
| front headphone jack. |
External speakers plugged into the wrong audio jack on a recently installed sound card.
See the sound card documentation for proper speaker connection.
120 Chapter 8 Troubleshooting Without Diagnostics