2 Click Mouse. 3 Try adjusting the settings. C H E C K T H E M O U S E C A B L E — Shut down the computer. Disconnect the mouse
cable, check it for damage, and firmly reconnect the cable.
If you are using a mouse extension cable, disconnect it and connect the mouse directly to the computer. TO V E R I F Y T H A T T H E P R O B L E M I S W I T H T H E M O U S E , C H E C K T H E T O U C H P A D —
1 Shut down the computer. 2 Disconnect the mouse. 3 Turn on the computer. 4 At the Windows desktop, use the touch pad to move the cursor around, select an icon, and open it. If the touch pad operates correctly, the mouse may be defective. C H E C K T H E S YS T E M S E T U P P R O G R A M S E T T I N G S — Verify that the system setup
program lists the correct device for the pointing device option. (The computer automatically recognizes a USB mouse without making any setting adjustments.)
TE S T T H E M O U S E C O N T R O L L E R — To test the mouse controller (which affects
pointer movement) and the operation of the touch pad or mouse buttons, run the Mouse test in the Pointing Devices test group in the Dell Diagnostics (see "Dell Diagnostics" on page 101).
R E I N S T A L L T H E T O U C H P A D D R I V E R — See "Reinstalling Drivers and Utilities" on
page 140.
Video and Display Problems Fill out the Diagnostics Checklist (see "Diagnostics Checklist" on page 198) as you complete these checks. CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
Troubleshooting
127