Dell PY760 Video and Monitor Problems

132 Troubleshooting
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.
CHECK THE SYSTEM SETUP PROGRAM SETTINGS—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
page137.
TEST THE MOUSE CONTROLLER —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 page115).
REINSTALL THE TOUCH PAD DRIVER —See "Reinstalling Drivers and Utilities" on
page142.
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
CHECK THE MONITOR CABLE CONNECTION
• 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).
book.book Page 132 Wednesday, August 13, 2008 12:12 PM