User Manual
Table Of Contents
- OptiPlex 7000 Tower Service Manual
- Contents
- Working inside your computer
- Removing and installing components
- Recommended tools
- Screw list
- Major components of OptiPlex 7000 Tower
- Side cover
- Front bezel
- Hard-drive assembly
- 3.5 in. hard-drive assembly
- Solid-state drive
- WLAN card
- Coin-cell battery
- Memory module
- Expansion card
- Graphical processing unit
- Slim optical-drive
- Slim optical-drive bracket
- Speaker
- Power-supply unit
- Processor fan and heat-sink assembly
- Processor
- Communication card
- Chassis fan
- Voltage regulator heat sink
- Power button
- Intrusion switch
- SD card reader (optional)
- Optional modules
- Removing optional DisplayPort module
- Installing optional DisplayPort module
- Removing optional VGA module
- Installing optional VGA module
- Removing optional HDMI module
- Installing optional HDMI module
- Removing optional Serial module
- Installing optional Serial module
- Removing optional Type-C module
- Installing optional Type-C module
- Removing optional Thunderbolt 4 module
- Installing optional Thunderbolt4 module
- Removing internal antenna
- Installing internal antenna
- System board
- Drivers and downloads
- BIOS setup
- Troubleshooting
- Getting help and contacting Dell
Steps
1. In the System BIOS or System Setup screen, select System Security and press Enter.
The System Security screen is displayed.
2. In the System Security screen, verify that Password Status is Unlocked.
3. Select System Password, update, or delete the existing system password, and press Enter or Tab.
4. Select Setup Password, update, or delete the existing setup password, and press Enter or Tab.
NOTE: If you change the System and/or Setup password, reenter the new password when prompted. If you delete the
System and/or Setup password, confirm the deletion when prompted.
5. Press Esc and a message prompts you to save the changes.
6. Press Y to save the changes and exit from System Setup.
The computer restarts.
Clearing CMOS settings
About this task
CAUTION: Clearing CMOS settings reset the BIOS settings on your computer.
Steps
1. Remove the side cover.
2. Disconnect the battery cable from the system board.
3. Remove the coin-cell battery.
4. Wait for one minute.
5. Replace the coin-cell battery.
6. Connect the battery cable to the system board.
7. Replace the side cover.
Clearing BIOS (System Setup) and System passwords
About this task
To clear the system or BIOS passwords, contact Dell technical support as described at www.dell.com/contactdell.
NOTE:
For information on how to reset Windows or application passwords, refer to the documentation accompanying
Windows or your application.
118 BIOS setup