Dell OptiPlex GX400 User Manual Page 38
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Solving Problems
Dell™OptiPlex™GX400SystemUser'sGuide
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.
- Notes, Notices, and Cautions 1
- About Your Computer 2
- Back View of Your Computer 3
- Inside Your Computer 4
- System Board Components 5
- Advanced Features 6
- Manageability 7
- Security 8
- Password Protection 9
- Setup Password 10
- Jumper Settings 11
- Installing a TAPI Device 12
- Power Management 13
- Installing Upgrades 15
- Power Supply 17
- Front Panel 17
- System Memory 18
- Upgrading System Memory 19
- Removing a Memory Module 19
- Disk Drives and Media 20
- General Guidelines 25
- EIDE Cables 25
- SCSI ID Numbers 25
- Device Termination 25
- AGP Card Brace 26
- Expansion Cards 26
- Removing the Filler Bracket 27
- Microprocessor 29
- Removing the Microprocessor 31
- Removing the VRM 32
- Replacing the VRM 32
- System Battery 33
- Back to Contents Page 34
- Technical Specifications 35
- Solving Problems 38
- Monitor Problems 39
- Video Problems 39
- Sound and Speaker Problems 40
- Printer Problems 41
- Mouse Problems 43
- Keyboard Problems 43
- Diskette Drive Problems 44
- Hard Drive Problems 45
- Battery Problems 47
- Expansion-Card Problems 47
- Repairing a Wet Computer 48
- Hardware Conflicts 49
- System Memory Problems 50
- Microprocessor Problems 50
- System Board Problems 51
- Dell Diagnostics 52
- Advanced Testing 53
- Messages and Codes 54
- System Beep Codes 56
- Warning Messages 57
- Diagnostics Messages 57
- Diagnostic Indicators 57
- Back-Panel Indicators 58
- Software Problems 59
- BIOS Recovery Utility 61
- Getting Help 62
- Problems With Your Order 63
- Product Information 63
- Before You Call 63
- Dell Contact Numbers 64
- Additional Information 71
- IC Notice (Canada Only) 72
- CE Notice (European Union) 72
- Battery Disposal 72
- VCCI Notice (Japan Only) 73
- MIC Class A Regulatory Mark 74
- Class B Device 74
- MIC Class B Regulatory Mark 74
- BSMI Notice (Taiwan Only) 75
- ENERGY STAR®Compliance 76
- Coverage During Year One 77
- General Provisions 77
- Safety Instructions 80
- Overview 82
- New User Interface 82
- Clean Desktop Wizard 83
- Taskbar Grouping 83
- Notification Area Cleanup 83
- System Restore 84
- Restore Process 85
- Driver Rollback 85
- How to Add Users 86
- Internet Connection Firewall 87
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