What to do if Dell OptiPlex 7090 Tower Desktop says operating system not found?
If your Dell Desktop displays 'Operating System not found', reinstall the operating system. If the problem persists, No answer.
How to troubleshoot CPU failure on Dell OptiPlex 7090 Tower Desktop?
To troubleshoot a CPU failure on your Dell Desktop, run the Dell Support Assist/Dell Diagnostics tool. If the problem persists, replace the system board.
How to fix CMOS battery failure in Dell Desktop?
If your Dell Desktop experiences a CMOS battery failure, reset the CMOS battery connection. If the problem persists, replace the RTS battery.
What to do if hard-disk drive read failure on Dell OptiPlex 7090 Tower?
If your Dell Desktop has a hard-disk drive read failure, likely because the hard drive is defective, shut down the computer, remove the hard drive, and boot the computer from an optical. Then, shut down the computer, reinstall the hard drive, and restart the computer. If the problem persists, try another drive and run the Hard Disk Drive tests in Dell Diagnostics.
How to fix BIOS recovery image not found on Dell OptiPlex 7090 Tower Desktop?
If the BIOS recovery image is not found on your Dell Desktop, flash the latest BIOS version. If the problem persists, replace the system board.
What to do if BIOS recovery image found but invalid on Dell OptiPlex 7090 Tower?
If the BIOS recovery image found is invalid on your Dell Desktop, flash the latest BIOS version. If the problem persists, replace the system board.
What causes power rail failure on Dell Desktop?
If your Dell Desktop experiences a power rail failure, it indicates that the EC ran into a power sequencing failure. If the problem persists, replace the system board.
What to do if no memory/RAM detected in Dell Desktop?
If your Dell Desktop is not detecting memory or RAM, first, make sure the memory module is properly installed. If the problem continues, try replacing the memory module.
How to fix SBIOS Flash corruption on Dell OptiPlex 7090 Tower?
If your Dell Desktop shows SBIOS Flash corruption, it means flash corruption detected by SBIOS. If the problem persists, replace the system board.
Why does Dell Desktop show time-of-day clock stopped?
If the time-of-day clock has stopped on your Dell Desktop, the reserve battery that supports the system configuration settings may require recharging. Connect your computer to an electrical outlet to charge the battery. If the problem persists, No answer.
Covers safety guidelines, ESD protection, and handling sensitive components.
Steps to follow after completing internal computer work.
Lists tools, screw types, and identifies major system components visually.
Instructions for removing and installing the side cover and front bezel.
Procedures for 2.5-inch and 3.5-inch hard drives, and M.2 SSDs.
Steps for replacing memory modules and processor fan/heat sink assemblies.
Instructions for replacing the processor, graphics card, and powered GPU.
Procedures for coin-cell battery, WLAN card, and slim optical drive.
Steps for replacing chassis fan, VR heat sink, speaker, and power button.
Procedures for removing and installing the power supply unit and intrusion switch.
Instructions for replacing optional I/O modules and the system board.
Information on obtaining and installing system drivers.
How to access and navigate boot menus and system setup.
Details system configuration settings available in BIOS.
Procedures for assigning and managing system and setup passwords.
Running pre-boot diagnostics and interpreting LED error codes.
Explanations for diagnostic and system error messages.
Steps to perform a WiFi power cycle to resolve connectivity issues.
List of resources and methods for obtaining Dell support.
General| Processor Options | 10th Gen Intel Core i3, i5, i7, i9 |
|---|---|
| Chipset | Intel Q470 Chipset |
| Memory | Up to 128GB DDR4 2933MHz |
| Storage Options | 2.5-inch HDD/SSD, M.2 PCIe NVMe SSD |
| Graphics Options | Integrated Intel UHD Graphics |
| Operating System | Windows 10 Home/Pro, Ubuntu Linux |
| Ports | Front: USB 3.2 Gen 2 Type-C, USB 3.2 Gen 1; Rear: USB 2.0 |
| Expansion Slots | 1 x PCIe x16, 1 x PCIe x4, 1 x PCIe x1 |
| Power Supply | 260W, 300W or 500W |
| Dimensions | 293.0 mm |
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