Dell Precision R5400 Service Manual page 59

Turn the computer off — If you are unable to get a response by pressing a key on your keyboard or moving your mouse, press and hold the power button for
at least 8 to 10 seconds (until the computer turns off), and then restart your computer.
Other software problems
Check the software documentation or contact the software manufacturer for troubleshooting information —
Ensure that the program is compatible with the operating system installed on your computer.
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Ensure that your computer meets the minimum hardware requirements needed to run the software. See the software documentation for information.
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Ensure that the program is installed and configured properly.
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Verify that the device drivers do not conflict with the program.
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If necessary, uninstall and then reinstall the program.
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Back up your files immediately
Use a virus-scanning program to check the hard drive, CDs, or DVDs
Save and close any open files or programs and shut down your computer through the Start menu
Memory 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.
If you receive an insufficient memory message —
Save and close any open files and exit any open programs you are not using to see if that resolves the problem.
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See the software documentation for minimum memory requirements. If necessary, install additional memory (see
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Reseat the memory modules (see
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Run the Dell Diagnostics (see
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If you experience other memory problems —
Reseat the memory modules (see
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Ensure that you are following the memory installation guidelines (see
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Ensure that the memory you are using is supported by your computer. For more information about the type of memory supported by your computer,
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see System Memory.
Run the Dell Diagnostics (see
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Mouse 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.
Check the mouse cable —
Ensure that the cable is not damaged or frayed and check cable connectors for bent or broken pins. Straighten any bent pins.
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Remove any mouse extension cables, and connect the mouse directly to the computer.
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Verify that the mouse cable is connected as shown on the setup diagram for your computer.
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Restart the computer —
1. Simultaneously press <Ctrl><Esc> to display the Start menu.
2. Press <u>, press the up- and down-arrow keys to highlight Shut down or Turn Off, and then press <Enter>.
3. After the computer turns off, reconnect the mouse cable as shown on the setup diagram.
4. Turn on the computer.
Test the mouse — Connect a properly working mouse to the computer, then try using the mouse.
Check the mouse settings —
Windows Vista:
System Memory) to ensure that your computer is successfully communicating with the memory.
Dell Diagnostics).
System Memory) to ensure that your computer is successfully communicating with the memory.
Dell Diagnostics).
System Memory).
System Memory).