Memory Problems; Power Problems; Sound And Speaker Problems; No Sound From Speakers - Dell Precision M2400 Service Manual

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, floppy disks, CDs, or DVDs
Save and close any open files or programs and shut down your computer through the Start menu

Memory Problems

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer.
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 Memory) to ensure that your computer is successfully communicating with the memory.
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Run the Dell Diagnostics (see
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If you experience other memory problems —
Reseat the memory modules (see Memory) to ensure that your computer is successfully communicating with the memory.
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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 the Setup and Quick Reference Guide for your computer at support.dell.com.
Run the Dell Diagnostics (see
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Power Problems

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer.
If the power light is blue and the computer is not responding —
If the power light is off — The computer is either turned off or is not receiving power.
Reseat the power cable in the power connector on the back of the computer and the electrical outlet.
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Bypass power strips, power extension cables, and other power protection devices to verify that the computer turns on properly.
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Ensure that any power strips being used are plugged into an electrical outlet and are turned on.
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Ensure that the electrical outlet is working by testing it with another device, such as a lamp.
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Eliminate interference — Some possible causes of interference are:
Power, keyboard, and mouse extension cables
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Too many devices connected to the same power strip
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Multiple power strips connected to the same electrical outlet
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Sound and Speaker Problems

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions that shipped with your computer.

No sound from speakers

NOTE: The volume control in MP3 and other media players may override the Windows volume setting. Always check to ensure that the volume on the
media player(s) has not been turned down or off.
Adjust the Windows volume control —
that the sound is not muted.
Dell Diagnostics).
Dell Diagnostics).
See
Click or double-click the speaker icon in the lower-right corner of your screen. Ensure that the volume is turned up and
Replacing a Memory Module).
Diagnostic Lights.
Replacing a Memory Module).