Dell Inspiron 3700 Reference And Troubleshooting Manual page 52

3-4 Dell Inspiron 3700 System Reference and Troubleshooting Guide
Plug the computer directly into an electrical outlet, bypassing any power
protection devices.
Plug a device, such as a lamp that you know works, into the electrical outlet to
make sure the power source is okay.
NOTE: If your modem can dial and connect to one Internet service provider (ISP) or to
a fax machine, your modem is functioning properly. For assistance, contact the ISP to
which you cannot connect.
If you are experiencing problems with a modem, perform the following checks:
If you have any other telephone devices plugged into this line, such as answering
machines, dedicated fax machines, or line splitters, then bypass them and plug
the modem cable directly into the telephone connector on the wall.
Reseat the cable connections.
Try a different cable; if you are using a cable that is 10 feet or more in length, try a
shorter one.
Disconnect the cable from the modem and plug it directly into a telephone.
Listen for a dial tone.
Low connection speeds can be caused by line noise. If you have persistent
problems, contact your telephone company to check for data noise and
imbalanced lines.
If 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 one
may be defective.
Check drive operations at the MS-DOS prompt in the Dell Diagnostics (refer to
"Running the Dell Diagnostics" found later in this chapter) and the Windows
operating system.
Check the settings on the Page One submenu of the System Setup program as
described in Appendix B, "Using the System Setup Program."
Run the Diskette device group as described in "Running the Dell Diagnostics"
found later in this chapter.
If you have CD-ROM or DVD-ROM drive problems, perform the following checks.