Owner`s manual
Table Of Contents
- Dell Precision Tower 7910 Owner's Manual
- Working on Your Computer
- Removing and Installing Components
- Recommended Tools
- System Overview
- Removing the Power Supply Unit (PSU)
- Installing the Power Supply Unit (PSU)
- Removing the Front Cover
- Installing the Front Cover
- Removing the Hard Drive
- Installing the Hard Drive
- Removing the Left Cover
- Installing the Left Cover
- Removing the Intrusion Switch
- Installing the Intrusion Switch
- Removing the PCI Card
- Installing the PCI Card
- Removing the Slimline Optical Drive
- Installing the Slimline Optical Drive
- Removing the Memory Shroud
- Installing the Memory Shroud
- Removing the Memory
- Installing the Memory
- Removing the Coin-Cell Battery
- Installing the Coin-Cell Battery
- Removing the Heatsink
- Installing the Heatsink
- Removing the Liquid Cooler Heatsink (Optional)
- Installing the Liquid Cooler Heatsink (Optional)
- Removing the HeatSink Fan
- Installing the Heatsink Fan
- Removing the PCIe Card Retention
- Installing the PCIe card retention
- Removing the System-Fan Assembly
- Installing the System-Fan Assembly
- Removing the Front Bezel
- Installing the Front Bezel
- Removing the I/O Panel and the USB 3.0 Ports
- Installing the I/O Panel and the USB 3.0 Ports
- Removing the Power Switch
- Installing the Power Switch
- Removing the Speaker
- Installing the Speaker
- Removing the Right Cover
- Installing the Right Cover
- Removing the 5.25-inch Optical Drive
- Installing the 5.25-inch Optical Drive
- Removing the HDD Thermal Sensor
- Installing the HDD Thermal Sensor
- Removing the Processor
- Installing the Processor
- Removing the Hard-Drive Fan
- Installing the Hard-Drive Fan
- Removing the Power Supply Unit (PSU) Card
- Installing the Power Supply Unit (PSU) Card
- System Board Components
- Removing the System Board
- Installing the System Board
- Additional Information
- System Setup
- Diagnostics
- Troubleshooting Your Computer
- Technical Specifications
- Contacting Dell

Check the PSU cabling to
Motherboard to make sure that
all cables are installed correctly.
2,3
A possible Motherboard,
Memory, or CPU failure has
occurred
If two or more memory modules
are installed, remove the
modules, then reinstall one
module and restart the
computer. If the computer starts
normally, continue to install
additional memory modules (one
at a time) until you have
identified a faulty module or
reinstalled all modules without
error.
2,4
A possible coin cell failure has
occurred.
2,5
System is in Recovery Mode
BIOS checksum failure was
detected and the system is now
in recovery mode.
2,6
A possible processor failure has
occurred
Re-seat the processor
2,7
Memory modules are detected,
but a memory power failure has
occurred.
If two or more memory modules
are installed, remove the
modules, then reinstall one
module and restart the
computer. If the computer starts
normally, continue to install
additional memory modules (one
at a time) until you have
identified a faulty module or
reinstalled all modules without
error.
3,1
PCI device configuration activity
is in progress or PCI device
failure was detected.
Remove all peripheral cards from
the PCI and PCI-E slots and
reboot the computer. If the
computer boots, add the
peripheral cards back one by one
until you find the bad one.
3,2
A possible HDD or USB failure
has occurred.
Re-seat all power and data cables
to HDD’s. Reinstall all USB
devices and check all cable
connections.
3,3
No memory modules installed
If two or more memory modules
are installed, remove the
modules, then reinstall one
module and restart the
computer. If the computer starts
normally, continue to install
additional memory modules (one
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