Dell OptiPlex GX400 User Manual Page 43
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Is the device working properly?
Yes. You need a new device. Contact Dell for technical assistance.
No. Contact Dell for technical assistance.
Mouse Problems
Basic Checks:
l Disconnect the cable from the computer and check the cable connector for bent or broken pins. Check for damaged or frayed cables.
l Ensure that the cable is firmly connected to the computer.
l If you are using a USB mouse, ensure that you connect to one of the Port 1 USB connectors on the system back panel (see "Back-Panel Connectors and
Indicators").
l Reinstall the mouse driver for your operating system.
l Restart the computer.
If the problem still exists after you complete the basic checks, fill out the Diagnostics Checklist as you perform the following steps:
1. Turn off the computer, wait at least 30 seconds, and disconnect the mouse. Reconnect the mouse to the computer, and then turn the computer on.
Is the device working properly?
Yes. The problem is resolved.
No. Go to step 2.
2. If you are using a Personal System/2 (PS/2) mouse, enter system setup and make sure that Mouse Port under the Integrated Devices option is set to
On. Then exit system setup properly to save the information, and reboot the system.
Is the device working properly?
Yes. The problem is resolved.
No. Go to step 3.
3. If you are using a PS/2 mouse, run the Mouse test in the Pointing Devices device group in the Dell Diagnostics.
Did the tests complete successfully?
Yes. Go to the next question.
No. Contact Dell for technical assistance.
Do you have another computer that is working properly?
Yes. Go to step 4.
No. Go to the next question.
Do you have another mouse that is working properly?
Yes. Turn off the computer, wait at least 30 seconds, and disconnect the mouse. Then go to step 6.
No. Contact Dell for technical assistance.
4. Turn off the original computer, wait at least 30 seconds, and disconnect the mouse.
5. Turn off your other computer, wait at least 30 seconds, and disconnect its mouse. Connect the mouse from the original computer, and then turn the
computer on.
Is the mouse working properly?
Yes. There is a problem with the original computer. Contact Dell for technical assistance.
No. The mouse may be defective. Contact Dell for technical assistance.
6. Connect a different mouse to the computer, and then turn the computer on.
Is the mouse working properly?
Yes. The original mouse is defective. The problem is resolved.
No. Contact Dell for technical assistance.
Keyboard Problems
Basic Checks:
l Disconnect the cable from the computer and check the cable connector for bent or broken pins. Check for damaged or frayed cables.
l Ensure that the cable is firmly connected to the computer.
- 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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