Service Manual

26 Troubleshooting
• Verify that the mouse cable is connected as shown on the setup diagram for your
computer.
RESTART THE COMPUTER —
1 Simultaneously press <Ctrl><Esc> to display the Start menu.
2 Press < u> , press the up- and down-arrow keys to highlight Shut down or Tu rn
Off
, and then press <Enter>.
3 After the computer turns off, reconnect the mouse cable as shown on the setup
diagram.
4 Turn on the computer.
TEST THE MOUSE — Connect a properly working mouse to the computer, and then
try using the mouse.
C
HECK THE MOUSE SETTINGS —
Windows XP
1 Click Start → Control Panel → Mouse .
2 Adjust the settings as needed.
Windows Vista:
1 Click Start → Control Panel → Hardware and Sound → Mouse .
2 Adjust the settings as needed.
REINSTALL THE MOUSE DRIVER
RUN THE HARDWARE TROUBLESHOOTER — See "Hardware Troubleshooter" on
page 12.
Network Problems
CAUTION: Before you begin any of the procedures in this section, follow the
safety instructions that shipped with your computer. For additional safety best
practices information, see the Regulatory Compliance Homepage at
www.dell.com/regulatory_compliance.
C
HECK THE NETWORK CABLE CONNECTOR — Ensure that the network cable is firmly
inserted into the network connector on the back of the computer and the network
jack.
C
HECK THE NETWORK LIGHTS ON THE BACK OF THE COMPUTER — If the link
integrity light is off (see "About Your Computer" in the Setup and Quick Reference
Guide), no network communication is occurring. Replace the network cable.
R
ESTART THE COMPUTER AND LOG ON TO THE NETWORK AGAIN
CHECK YOUR NETWORK SETTINGS — Contact your network administrator or the
person who set up your network to verify that your network settings are correct and