Dell OptiPlex 990 Small Service Manual

Dell OptiPlex 990 Small Desktop manual cover
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Dell OptiPlex 990 Small Desktop Specification

The Dell OptiPlex 990 Small Desktop is a compact and efficient business-oriented computer designed to deliver robust performance and manageability. Powered by Intel's second-generation Core processors, it offers options ranging from the Intel Core i3 to the high-performance Intel Core i7, accompanied by Intel HD Graphics for responsive multimedia handling. The system supports up to 16GB of DDR3 RAM, allowing for smooth multitasking and efficient processing of demanding applications. Storage options include traditional hard disk drives and solid-state drives, providing flexibility between high capacity and enhanced speed.

Connectivity features include multiple USB 2.0 ports, DisplayPort, VGA output, and optional serial and parallel ports to accommodate various peripherals and display configurations. Networking capabilities are robust, with integrated gigabit Ethernet ensuring fast and reliable internet and intranet access. The OptiPlex 990 supports Dell's vPro technology, which enhances remote management and security, making it suitable for IT-managed environments.

The desktop's design emphasizes space-saving without sacrificing expandability, featuring a tool-less chassis that facilitates easy upgrades and maintenance. Energy efficiency is prioritized, with Energy Star 5.0 compliance and an optional 90% efficient power supply, contributing to reduced operational costs and environmental impact. Security features include a Trusted Platform Module (TPM), chassis intrusion detection, and optional data encryption solutions, safeguarding sensitive business data. The Dell OptiPlex 990 Small Desktop combines performance, manageability, and security, making it a versatile solution for a wide range of organizational needs.

Dell OptiPlex 990 Small Desktop F.A.Q.

How do I perform a clean install of Windows on the Dell OptiPlex 990?

To perform a clean install of Windows on the Dell OptiPlex 990, insert a bootable Windows installation USB drive, restart the computer, and press F12 to enter the boot menu. Choose the USB drive, follow the on-screen instructions to install Windows, and ensure you select the option to format the drive.

What should I do if the Dell OptiPlex 990 doesn't power on?

If the Dell OptiPlex 990 doesn't power on, first check the power cable and ensure it is properly connected. Verify that the power outlet is working by testing with another device. If the issue persists, try resetting the power supply by unplugging it for 30 seconds and then reconnecting.

How can I upgrade the RAM on the Dell OptiPlex 990?

To upgrade the RAM on the Dell OptiPlex 990, power off the computer and disconnect all cables. Open the case by removing the side panel screws. Locate the RAM slots on the motherboard, remove the existing RAM if necessary, and insert the new RAM sticks, ensuring they click into place.

What is the process to reset BIOS settings to default on the OptiPlex 990?

To reset BIOS settings to default on the OptiPlex 990, restart the computer and press F2 to enter BIOS setup. Navigate to the 'Exit' tab and select 'Load Defaults'. Save changes and exit the BIOS to reboot with default settings.

How do I connect multiple monitors to the Dell OptiPlex 990?

To connect multiple monitors to the Dell OptiPlex 990, ensure it has a compatible graphics card with multiple outputs. Connect each monitor to the available ports (e.g., VGA, DVI, HDMI). Then, adjust display settings in the operating system to extend or duplicate the desktop across the monitors.

What steps should I take if my Dell OptiPlex 990 is overheating?

If the Dell OptiPlex 990 is overheating, clean the internal components, especially the fans and heatsinks, to remove dust buildup. Ensure proper ventilation around the case. Consider applying new thermal paste to the CPU if necessary, and check that all fans are operational.

How can I replace the hard drive in the Dell OptiPlex 990?

To replace the hard drive in the Dell OptiPlex 990, turn off the computer and unplug all cables. Open the case and locate the hard drive bay. Remove the screws securing the old drive, disconnect the cables, and slide it out. Install the new drive by reversing these steps, ensuring secure connections.

What should I do if the Dell OptiPlex 990 is not recognizing USB devices?

If the OptiPlex 990 is not recognizing USB devices, try connecting the device to another USB port. Check the Device Manager in Windows for any USB driver issues and update drivers if necessary. Restart the computer and try the device again.

How can I improve the performance of my Dell OptiPlex 990?

To improve performance, consider upgrading the RAM and replacing the hard drive with an SSD for faster data access. Regularly update software and drivers, and perform disk cleanups and defragmentation to optimize performance.

What is the procedure to update the BIOS on the Dell OptiPlex 990?

To update the BIOS on the Dell OptiPlex 990, download the latest BIOS update from the Dell support website. Run the downloaded file and follow the on-screen instructions. Ensure the computer remains powered on during the update process to avoid damage.