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Solving Problems
Dell™ OptiPlex™ GX400 System User's Guide
Before You Begin
Dell Diagnostics
Messages and Codes
Software Problems
Before You Begin
This section describes system and software problems, offers corrective actions, describes the
Dell Diagnostics
utility, and provides system messages and
codes. Before you call Dell for technical assistance, complete the following tasks to help you resolve computer problems:
l
Read "
About Your Computer
" and "
Safety First
—
For You and Your Computer
."
l
Take the problem-solving action listed in the following table for the component or equipment that is not working properly.
Power Problems
The power indicator on the
front panel
communicates codes that can help you determine whether there is a problem with your computer. The following table
lists the codes for the power indicator. For more information, see "
Diagnostic Indicators
."
Basic Checks:
l
Test the electrical outlet: ensure that the electrical outlet is working by testing it with a different device such as a lamp.
l
Connect the computer power cable directly to an electrical outlet to ensure that the computer turns on. Do not connect it to a power protection device,
uninterruptible power supply (UPS), power strip, or extension cord.
l
Ensure that all power cables are firmly connected, verifying that each power cable is adequately connected at the computer device and to the electrical
outlet.
l
Check for interference: electrical appliances on the same circuit or operating in close proximity to the computer can cause interference.
Solving Problems
Problem
Action
Power indicator does not light
See "
Power Problems
"
Monitor power indicator does not light
See "
Monitor Problems
"
No sound
See "
Sound and Speaker Problems
"
Printer not working
See "
Printer Problems
"
Serial or other parallel devices not working
See "
Serial or Parallel Device Problems
"
Mouse not working
See "
Mouse Problems
"
Keyboard not working
See "
Keyboard Problems
"
Diskette drive or hard drive: indicators not lit, scraping or unusual noises, no noise See "
Diskette Drive Problems
" or "
Hard Drive Problems
"
System battery not working
See "
Battery Problems
"
Expansion card errors or malfunction
See "
Expansion-Card Problems
"
A program locks up
See "
Recover From a Program That Is Not Responding
"
Computer locks up
See "
Restart a Computer That Is Not Responding
"
Computer gets wet
See "
Repairing a Wet Computer
"
Computer is dropped or damaged
See "
Repairing a Dropped or Damaged Computer
"
Hardware devices conflict
See "
Hardware Conflicts
"
System memory amount is not correct
See "
System Memory Problems
"
System board malfunctions
See "
System Board Problems
"
System board is damaged
See "
Resetting a Damaged System Board
"
An error message
See "
Messages and Codes
"
A series of beeps on system startup
See "
Messages and Codes
"
Power Indicator Codes
Power Indicator Code Cause
Solid green
Power is on, and the computer is operating normally.
Blinking green
The computer is in the suspended state (Microsoft
®
Windows
®
2000 only).
Solid yellow
The
Dell Diagnostics
is running a test, or a device on the system board may be faulty or incorrectly installed.
Blinking yellow
There is a system board or power supply failure.
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