Video And Display Problems; If The Display Is Blank - Dell Latitude ATG D620 User Manual

Troubleshooting: Dell Latitude ATG D620 User's Guide
If you are using a mouse extension cable, disconnect it and connect the mouse directly to the
computer.
To verify that the problem is with the mouse, check the touch pad —
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.
Check the system setup program settings —
Setup Program) lists the correct device for the pointing device option. (The computer automatically
recognizes a USB mouse without making any setting adjustments.)
Test the mouse controller —
operation of the touch pad or mouse buttons, run the Mouse test in the Pointing Devices test group
in the Dell Diagnostics (see
Reinstall the touch pad driver —

Video and Display Problems

Fill out the Diagnostics Checklist (see
CAUTION: Before you begin any of the procedures in this section, follow the safety
instructions in the Product Information Guide.

If the display is blank

NOTE: If you are using a program that requires a higher resolution than your computer
supports, it is recommended that you attach an external monitor to your computer.
Check the battery —
depleted. Connect the computer to an electrical outlet using the AC adapter, and turn on the computer.
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To test the mouse controller (which affects pointer movement) and the
Dell Diagnostics).
See Reinstalling Drivers and
Dell Diagnostics) as you complete these checks.
If you are using a battery to power your computer, the battery charge may be
Verify that the system setup program (see
Utilities.
System