It is highly recommended to install the Intel Chipset Software Installation Utility before the network driver. This allows Windows to correctly identify the motherboard's components, which often solves "Unknown Device" errors in the Device Manager. Alternative: Driver Packs for Mass Deployment
back online after a fresh Windows 7 installation is a common challenge, primarily because Windows 7 lacks the native "out-of-the-box" drivers for this specific hardware.
Getting your Dell OptiPlex 790 Go to product viewer dialog for this item. It is highly recommended to install the Intel
On a working computer with internet access, visit the Dell Drivers & Downloads page.
Select Windows 7, 64-bit (or 32-bit, depending on your version) from the "Operating system" dropdown. Getting your Dell OptiPlex 790 Go to product
If you are setting up multiple machines or want a single file containing all necessary drivers, Dell provides .
The following guide provides the best official and free methods for downloading and installing these drivers to ensure stable internet connectivity. If you are setting up multiple machines or
Download the Intel 825xx Gigabit Platform LAN Network Driver and save the .exe file to a USB flash drive. Install on OptiPlex: Plug the USB into the OptiPlex 790 , run the installer, and follow the on-screen prompts.