Dell Latitude E6400 XFR (Mid 2008) - Manual (Page 17)

Dell ™ Latitude™ E6400 XFR Service Manual
Page 17
ELIMINATE POSSIBLE INTERFERENCE — Turn off nearby fans, fluorescent lights, or halogen lamps to check for
interference.
RUN THE HARDWARE TROUBLESHOOTER — See Hardware Troubleshooter.
No Sound From Headphones
CHECK THE HEADPHONE CABLE CONNECTION — Ensure that the headphone cable is securely inserted into the
headphone connector. See the Setup and Features Information Guide for your computer at support.dell.com.
ADJUST THE WINDOWS VOLUME CONTROL — Click or double-click the speaker icon in the lower-right corner of
your screen. Ensure that the volume is turned up and that the sound is not muted.
1.2.8 Video and Display Problems
CAUTION: Before you begin any of the procedures in this section, follow the safety
instructions that shipped with your computer.
NOTICE: If your computer came with a PCI graphics card installed, removal of the card is not
necessary when installing additional graphics cards; however, the card is required for
troubleshooting purposes. If you remove the card, store it in a safe and secure location. For
information about your graphics card, go to support.dell.com.
CHECK THE DIAGNOSTIC LIGHTS — See Diagnostic Lights.
CHECK THE DISPLAY SETTINGS — See the Dell™ Technology Guide on your computer or at support.dell.com.
ADJUST THE WINDOWS DISPLAY SETTINGS —
Windows XP:
1. Click Start→ Control Panel→ Appearance and Themes.
2. Click the area you want to change or click the Display icon.
3. Try different settings for Color quality and Screen resolution.
Windows Vista:
1. Click Start → Control Panel→ Hardware and Sound→ Personalization→ Display Settings.
2. Adjust Resolution and Colors settings, as needed.
Only Part of the Display is Readable
CONNECT AN EXTERNAL MONITOR —
1. Shut down your computer and connect an external monitor to the computer.
2. Turn on the computer and the monitor and adjust the monitor brightness and contrast controls.
If the external monitor works, the computer display or video controller may be defective. Contact Dell Support.
1.3 Dell Technical Update Service
The Dell Technical Update service provides proactive e-mail notification of software and hardware updates for your
computer. The service is free and can be customized for content, format, and how frequently you receive notifications.
To enroll for the Dell Technical Update service, go to support.dell.com.
1.4 Dell Support Utility
The Dell Support Utility is installed on your computer and available from the Dell Support, , icon on the taskbar or
from the Start button. Use this support utility for self-support information, software updates, and health scans of your
computing environment.