Clean the drive or disk —See the Dell™ Technology Guide for more information on cleaning your computer.Check the cable connectionsRun the Hardware Troubleshooter —See Hardware Troubleshooter on page 83.Run the Dell Diagnostics —See Dell Diagnostics.Optical drive problemsAdjust the Windows volume control —l Click the speaker icon in the lower-right corner of your screen.l Ensure that the volume is turned up by clicking the sidebar and dragging it up.l Ensure that the sound is not muted by clicking any boxes that are checked.Check the speakers and subwoofer —See Sound and Speaker Problems.Problems writing to an optical driveClose other programs —The optical drive must receive a steady stream of data during the writing process. If the stream is interrupted, an error occurs. Try closing all programs beforeyou write to the optical.Turn off standby mode in Windows before writing to a disc —Search for the keyword standby in Windows Help and Support for information on power management modes.Hard drive problemsRun Check Disk —Windows XP:1. Click Start and click My Computer.2. Right-click Local Disk C:.3. Click Properties® Tools® Check Now.4. Click Scan for and attempt recovery of bad sectors and click Start.Windows Vista:1. Click Start and click Computer.2. Right-click Local Disk C:.3. Click Properties® Tools® Check Now.The User Account Control window may appear. If you are an administrator on the computer, click Continue; otherwise, contact your administrator tocontinue the desired action.4. Follow the instructions on the screen.NOTE: High-speed optical drive vibration is normal and may cause noise, which does not indicate a defect in the drive or the media.NOTE: Because of different regions worldwide and different disc formats, not all DVD titles work in all DVD drives.