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Enabled-Silent.
See "Chassis Intrusion" for instructions.
12. If you installed a second microprocessor and your system is running the Microsoft Windows NT 4.0 operating system, reinstall the operating
system.
See your Windows NT documentation for instructions.
When you reinstall Windows NT 4.0, the operating system detects the second microprocessor.
13. Run the Dell Diagnostics to verify that the new microprocessor is operating correctly.
Upgrading an Existing Microprocessor
To upgrade an existing microprocessor, perform the following steps.
1. Remove the computer cover according to the instructions in "Removing and Replacing the Computer Cover."
2. Rotate the power supply as described in "Rotating the Power Supply Away From the System Board."
3. Remove the airflow shroud by squeezing in on the two pairs of tabs and lifting it away.
4. Remove the existing microprocessor from its connector.
If present, remove the two thumbscrews that secure the heat sink to the system board. Press outward and hold one side of the guide bracket
while pulling up on the processor/heat sink assembly. Repeat this process for the other side of the processor/heat sink assembly. Then pull
the processor/heat sink assembly out of its connector (see Figure 1). You must use up to 15 lb of force to disengage the processor from the
connector.
Figure 1. Microprocessor Removal
5. Insert the new microprocessor into the system board connector.
Press the processor firmly into its connector until it is fully seated. You must use up to 25 lb of force to fully seat the processor in its connector.
NOTE: If a setup password has been assigned by someone else, contact your network administrator for information on resetting
the chassis intrusion detector.
NOTE: Dell recommends that only a technically knowledgeable person perform this procedure.
CAUTION: Before you remove the computer cover, see "Safety First—For You and Your Computer."
NOTE: Before disconnecting a peripheral from the system or removing a component from the system board, verify that the standby
power light-emitting diode (LED) on the system board has turned off. For the location of this LED, see Figure 8 in "Inside Your
Computer."
1
Airflow shroud
2
Thumbscrews (2)
3
Second processor
4
Guide bracket
5
Cooling fan
6
Processor/heat sink assembly
- Backing Up Your Files 2
- Basic Checks 2
- Look and Listen 3
- System Setup 3
- Replacing the Battery 4
- International Dialing Codes 6
- Americas Contact Numbers 7
- Europe Contact Numbers 9
- Overview 15
- Features 15
- Before You Start Testing 15
- Advanced Testing 16
- Installing an Expansion Card 23
- Removing an Expansion Card 25
- Troubleshooting the Keyboard 26
- Troubleshooting the Mouse 26
- Troubleshooting the Monitor 26
- Troubleshooting I/O Ports 27
- Back to Contents Page 29
- Help Overview 29
- Contacting Dell 29
- Installing SCSI Devices 35
- Technical Assistance 38
- Help Tools 38
- Problems With Your Order 39
- Product Information 39
- Before You Call 40
- Internal Views 44
- System Board Components 45
- System Board Jumpers 46
- System Board Labels 47
- Troubleshooting the Battery 52
- Troubleshooting Drives 55
- Hardware Features 56
- Software Features 57
- Manageability Features 57
- ENERGY STAR®Compliance 59
- Installing RIMMs 60
- Removing Modules 61
- Securing clips (2) 62
- System Messages 63
- System Beep Codes 66
- Warning Messages 67
- Diagnostics Messages 67
- Diagnostic LEDs 68
- Getting Started 73
- Controls and Indicators 75
- Chassis Intrusion 77
- Password." 81
- AC Power Recovery 82
- Asset Tag 82
- Auto Power On 82
- Boot Sequence 82
- CPU Speed 83
- Integrated Devices 83
- Keyboard NumLock 85
- PCI IRQ Assignment 85
- Remote Wake Up 86
- Report Keyboard Errors 86
- Second Processor 86
- System Data 87
- System Date 87
- System Memory 87
- System Security 87
- System Time 88
- ZIP Floppy Support 88
- Error Messages 90
- Input Errors 90
- Memory-Resident Programs 91
- Program Conflicts 91
- Memory Address Conflicts 91
- BIOS Recovery Utility 92
- Processor 93
- System Information 93
- Expansion Bus 94
- Key Combinations 95
- Physical 96
- Environmental 96
- Using System Setup 97
- System Setup Options 97
- Entering System Setup 98
- System Setup Screen 98
- System Setup Navigation Keys 98
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