Specifications

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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.
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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).
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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.
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Reinstall the touch pad driver —
See Reinstalling Drivers and Utilities.
Video and Display Problems
Fill out the Diagnostics Checklist as you complete these checks.
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If the display is blank
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Check the battery —
If you are using a battery to power your computer, the battery charge may be depleted. Connect the computer to an electrical outlet using the AC adapter,
and then turn on the computer.
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Test the electrical outlet —
Ensure that the electrical outlet is working by testing it with another device, such as a lamp.
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Check the AC adapter —
ChecktheACadaptercableconnections.IftheACadapterhasalight,ensurethatthelightison.
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Connect the computer directly to an electrical outlet —
Bypass power protection devices, power strips, and extension cables to verify that the computer turns on.
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Adjust the power properties —
Search for the keyword sleep in Windows Help and Support.
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Switch the video image —
If your computer is attached to an external monitor, press <Fn><F8> to switch the video image to the display.
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If the display is difficult to read
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Adjust the brightness —
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
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.