The Dell Optiplex 755 is a great computer as it can run macOS, PrimeOS, Ubuntu, and Windows so when educational institutions put them up for auction, they are grabbed up quickly, cleaned up and brought to life with the installation of Random Access Memory (RAM) and a Hard Disk Drive.
The first Operating System that users will attempt is Microsoft Windows and that is due to them having an install disc lying around from another Dell computer. Unfortunately, once the installation is done with and versions of Windows 7 or later, I will usually get a call reporting that there is no sound on a Dell Optiplex 755 and what to do to fix it.
1. Launch any of the free Internet browsers that you have installed.
2. In the search bar, enter Dell Optiplex 755 drivers and let it search.
3. Click only on URLs pointing to Dell’s website.