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.
The Dell OptiPlex 790 Windows 7 Driver Cab Pack is a comprehensive package designed for IT professionals to deploy all drivers at once. Since you likely don't have internet access on the OptiPlex 790 yet, follow these steps: Download the Intel 825xx Gigabit Platform LAN Network
typically uses an . You should look for the Intel LAN Driver listed under the "Network" category for Windows 7 (available for both 32-bit and 64-bit). Since you likely don't have internet access on
The following guide provides the best official and free methods for downloading and installing these drivers to ensure stable internet connectivity. run the installer