support.dell.com Basic Troubleshooting 4-7• Plug a telephone cable into the telephone jack (the jack with a telephone icon) onthe modem and listen for a dial tone.• Try a different cable; if you are using a cable that is 10 feet or more in length, try ashorter one.• Low connection speeds can be caused by line noise. If you have persistent prob-lems, contact your telephone company to check for data noise and imbalancedlines.• Refer to “Modem” in Chapter 6 for further troubleshooting informationModem” in Chapter 6 for further troubleshooting information.Diskette DrivesIf you have diskette drive problems, perform the following checks:• Make sure the diskette is not write-protected if you are trying to copy data to it.• Try a different diskette in the drive. If the new diskette works, the original onemay be defective.• Check the settings on the Diskette Configuration submenu of the system setupprogram as described in Appendix B, “System Setup Program.”Appendix B, “System Setup Program.”• Run the Diskette device group as described in “Running the Dell Diagnostics”found later in this chapter.• Refer to “Drives” in Chapter 6 for further troubleshooting information.6 for further troubleshooting information.CD-ROM DrivesIf you have CD-ROM drive problems, perform the following checks.ks.NOTE: Inconsistencies in the recording of CD-ROM media may cause some higher-M media may cause some higher-speed CD-ROM drives to vibrate more than others. Such vibration and associatedSuch vibration and associatednoise do not indicate a defect in the drive or the CD. It should be noted that not allmedia can be read by all drives.• Double-click the My Computer icon, and check to see if the drive is recognizedby the system. Most of the common boot sector viruses cause the CD-ROMdrive to “disappear.” Use virus-scanning softwareUse virus-scanning software to check for and remove anyviruses.• Clean the disc with a soft, lint-free cloth and isopropyl alcohol.• Try another CD title.• Enter the system setup program as described in Appendix B, “System Setup Pro-x B, “System Setup Pro-gram,” and verify that Type is set to Auto for the appropriate IDE drive option.• Run the appropriate tests under the IDE Devices device group as described in“Running the Dell Diagnostics” found later in this chapter.• Refer to “CD-ROMOM Drives” in Chapter 6 for further troubleshooting information.