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3-6 Dell Dimension 900 System Reference and Troubleshooting Guide
• Change the display type to standard video graphics array (VGA) as follows:
1. Restart the system.
2. For Windows 98, Windows Me, and Windows 2000, press <F8> when you
see the Starting Windows ... message, and then select Safe Mode
from the boot manager screen.
For Windows NT, select Windows NT Workstation 4.0 [VGA Mode] from
the boot manager screen.
• Reinstall the video drivers (see “Video Drivers” in Chapter 4).
Speakers
Perform the following checks for speaker problems:
• Ensure that the speakers are properly connected as shown on the Getting
Started sheet or as described in the documentation that came with the speakers.
• Reseat all speaker connections and make sure they are inserted fully. Verify that
the audio jacks are not bent or broken.
• Verify that the speakers and/or subwoofer are turned on and are connected to a
known good power source.
• Turn up the volume knob on the speakers. If the audio is distorted, make sure
that the volume is not turned to its maximum setting. Adjust the treble and/or
bass if the sound is distorted.
• Turn up the volume by clicking the yellow speaker icon in the Windows taskbar
and adjusting the volume setting.
• Turn off the monitor and such devices as fans, fluorescent lights, or halogen
lamps to check for interference from those devices.
• Plug the speakers into the headphone jack of the optical drive, make sure the
headphone volume control is turned up, and play a music CD.
• Check for conflicts as described in “Resolving Software and Hardware Incompat-
ibilities” in Chapter 4. Then reinstall the audio drivers as described in
“Reinstalling Drivers” in Chapter 4.
Modem
NOTICE: Connect the modem to an analog line only. Using a nonanalog
line, such as a digital or private branch exchange (PBX) line, will damage
the modem.
NOTE: If your modem can dial and connect to one Internet service provider (ISP) or to
a fax machine, your modem is functioning properly. For assistance, contact the ISP to
which you cannot connect.