Dell Precision T7400 User's Guide - Page 103
Sound Problems - drivers windows 7
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Sound Problems CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. A D J U S T T H E W I N D O W S V O L U M E C O N T R O L - 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. TE S T T H E E L E C T R I C A L O U T L E T - Ensure that the electrical outlet is working by testing it with another device, such as a lamp. E L I M I N A T E P O S S I B L E I N T E R F E R E N C E - Turn off nearby fans, fluorescent lights, or halogen lamps to check for interference. R E I N S T A L L T H E S O U N D D R I V E R - See "Drivers" on page 129. R U N T H E H A R D W A R E TR O U B L E S H O O T E R - See "Troubleshooting Software and Hardware Problems in the Microsoft® Windows® XP and Microsoft Windows Vista™ Operating Systems" on page 131. Troubleshooting 103