Dell OptiPlex 740 User's Guide - Page 313

Drive Problems CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide. CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover. NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your computer's electronic components. You can do so by touching an unpainted metal surface on the computer. Fill out the "Diagnostics Checklist" on page 351 as you complete these checks. TE ST T H E D R I V E - •Insert another floppy disk, CD, or DVD to eliminate the possibility that the original one is defective. • Insert bootable media and restart the computer. C L E A N T H E D R I V E O R D I S K - See "CDs and DVDs" on page 300. CHECK THE CABLE CONNECTIONS C H E C K F O R S O F T W A R E A N D H A R D W A R E C O N F L I C T S - See "Resolving Software and Hardware Incompatibilities" on page 337. R U N T H E D E L L D I A G N O S T I C S - See "Dell Diagnostics" on page 327. CD and DVD drive problems NOTE: High-speed CD or DVD drive vibration is normal and may cause noise, which does not indicate a defect in the drive or the CD or DVD. NOTE: Because of different regions worldwide and different disc formats, not all DVD titles work in all DVD drives. ADJUST THE WINDOWS VOLUME CONTROL - • Click the speaker icon in the lower-right corner of your screen. • Ensure that the volume is turned up by clicking the slidebar and dragging it up. • Ensure that the sound is not muted by clicking any boxes that are checked. C H E C K T H E S P E A K E R S A N D S U B W O O F E R - See "Sound and Speaker Problems" on page 323. Solving Problems 313