3Turn on the computer.

4At 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.) For more information on using the system setup program, see "System Setup Program" on page 137.

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 115).

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 142.

Video and Monitor Problems

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.

NOTICE: If your computer came with a PCI graphics card installed, removal of the card is not necessary when installing additional graphics cards; however, the card is required for troubleshooting purposes. If you remove the card, store it in a safe and secure location. For information about your graphics card, go to support.dell.com.

The screen is blank

NOTE: For troubleshooting procedures, see the monitor’s documentation.

The screen is difficult to read

C H E C K T H E M O N I T O R C A B L E C O N N E C T I O N

Ensure that the monitor cable is connected as shown on the setup diagram for your computer.

Remove any video extension cables and connect the monitor directly to the computer.

Swap the computer and monitor power cables to determine if the monitor’s power cable is defective.

Check the connectors for bent or broken pins (it is normal for monitor cable connectors to have missing pins).

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Troubleshooting

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Dell PY760 manual Video and Monitor Problems, Screen is blank Screen is difficult to read, 132