Epson EL 486UC - Manual (Page 41)

Post-SETUP Procedures
After you run SETUP for the first time, you may need to install
the operating system on your computer (if it is not already
installed). See your operating system manual for instructions.
Once you have installed your operating system, install any
software you plan to use. See your application program
manuals for instructions.
You may also want to install the optional extended video
drivers for some of your application programs. (If your
computer was configured for you, these drivers are already
installed.) See the README file included on your Utility
diskette for more information.
Note
If you plan to install video drivers for Windows
applications, you must install Windows before you install
the drivers.
Running the SETUP Program 2-13