Video And Monitor Problems - Dell Latitude E4300 Service Manual

Troubleshooting: Dell Latitude E4300 Service Manual
2. Try adjusting the settings.
Check the mouse cable —
the cable.
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 —
device option. (The computer automatically recognizes a USB mouse without making any setting adjustments.) For more
information on using the system setup program, see the Dell Technology Guide on your computer or at support.dell.com.
Test the mouse controller —
pad or mouse buttons, run the Mouse test in the Pointing Devices test group in the Dell Diagnostics (see
Reinstall the touch pad driver —
See "Reinstalling Drivers and Utilities" in the Setup and Quick Reference Guide.

Video and Monitor Problems

CAUTION: Before working inside your computer, read the safety information that shipped with your
computer. For additional safety best practices information, see the Regulatory Compliance Homepage on
www.dell.com at www.dell.com/regulatory_compliance.
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
Test the electrical outlet —
Check the diagnostic lights —
See Diagnostic Lights.
Rotate the display to eliminate sunlight glare and possible interference.
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Shut down the computer. Disconnect the mouse cable, check it for damage, and firmly reconnect
Verify that the system setup program lists the correct device for the pointing
To test the mouse controller (which affects pointer movement) and the operation of the touch
Ensure that the electrical outlet is working by testing it with another device, such as a lamp.
Dell Diagnostics).