Dell Vostro 420 (Late 2008) - Manual (Page 52)

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Troubleshooting
I F 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.
• See the software documentation for minimum memory requirements. If
necessary, install additional memory (see your Service Manual at
support.dell.com).
• Reseat the memory modules (see your Service Manual at
support.dell.com) to ensure that your computer is successfully
communicating with the memory.
• Run the Dell Diagnostics (see "Dell Diagnostics" on page 48).
I F YOU EXPERIENCE OTHER MEMORY PROBLEMS —
• Reseat the memory modules (see your Service Manual at
support.dell.com) to ensure that your computer is successfully
communicating with the memory.
• Ensure that you are following the memory installation guidelines (see your
Service Manual at support.dell.com).
• Ensure that the memory you are using is supported by your computer. For
more information about the type of memory supported by your computer,
see "Memory" on page 31.
• Run the Dell Diagnostics (see "Dell Diagnostics" on page 48).
Lockups and Software Problems
CAUTION:
Before you begin any of the procedures in this section, read the safety
information that shipped with your computer. For additional safety best practices
information, see the Regulatory Compliance Homepage at
www.dell.com/regulatory_compliance.
The computer does not start up
E NSURE THAT THE POWER CABLE IS FIRMLY CONNECTED TO THE COMPUTER AND TO
THE ELECTRICAL OUTLET
The computer stops responding
NOTICE:
You may lose data if you are unable to perform an operating system
shutdown.