Troubleshooting and Maintenance
Troubleshooting Your Computer
Corporate Evaluator’s Guide 165
If sound does not record
• Check the software controls for recording sound: click Start, Programs (or All
Programs), Accessories, Multimedia (or Entertainment), Sound Recorder.
• In Volume Control, click Options, Properties, and make sure the microphone is
enabled in the recording controls.
• Test the audio with the e-Diagtools diagnostics—see “Testing the Hardware“ on
page 187.
If you hear a loud high-pitched whine (feedback) from the speakers
• In the Volume Control, try reducing the Master volume: double-click the speaker icon
in the taskbar.
• In Volume Control, click Options, Properties, and select the microphone option for
the playback settings. Then in Volume Control, make sure the microphone is muted.
• Avoid using the built-in microphone and built-in speakers at the same time.
CD and DVD problems
If you can’t boot from a CD or DVD in the CD/DVD drive
• Make sure the CD or DVD is bootable, such as the Recovery CD.
• Make sure the CD-ROM/DVD drive is selected as the boot device—see “To change
the boot device“ on page 34.
• Restart the computer: click Start, Shut Down (or Turn Off Computer), Restart.
• Test the CD/DVD drive with the e-Diagtools diagnostics—see “Testing the
Hardware“ on page 187.
If a DVD plays erratically
• Dirt or smudges can cause a disc to skip. Clean the disc with a soft cloth. If the disc is
badly scratched, it will probably have to be replaced.
• Some DVDs include software called “PC Friendly.” You generally should not install
this software, as it can cause errors or erratic play. If needed, uninstall itand restart
your system.
