Dell XPS 420 (Late 2007) - Manual (Page 69)

Troubleshooting
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3 After the computer turns off, reconnect the mouse cable as shown on the setup
diagram.
4 Turn on the computer.
T EST THE MOUSE — Connect a properly working mouse to the computer, then try
using the mouse.
C HECK THE MOUSE SETTINGS —
1 Click Start → Control Panel→ Hardware and Sound→ Mouse.
2 Adjust the settings as needed.
R EINSTALL THE MOUSE DRIVER — See "Drivers" on page 90.
R UN THE H ARDWARE T ROUBLESHOOTER — See "Troubleshooting Software and
Hardware Problems in the Microsoft Windows Vista™ Operating System" on page 93.
Network Problems
CAUTION:
Before you begin any of the procedures in this section, follow the
safety instructions in the Product Information Guide.
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 "Controls and Lights" on page 176), no network
communication is occurring. Replace the network cable.
R ESTART THE COMPUTER AND LOG ON TO THE NETWORK AGAIN
C HECK YOUR NETWORK SETTINGS — Contact your network administrator or the
person who set up your network to verify that your network settings are correct and
that the network is functioning.
R UN THE H ARDWARE T ROUBLESHOOTER — See "Troubleshooting Software and
Hardware Problems in the Microsoft Windows Vista™ Operating System" on page 93.
Power Problems
CAUTION:
Before you begin any of the procedures in this section, follow the
safety instructions in the Product Information Guide.
I F THE POWER LIGHT IS BLUE AND THE COMPUTER IS NOT RESPONDING — See
"Diagnostic Lights" on page 76.
book.book Page 69 Tuesday, November 27, 2007 10:29 AM