Where does it display "the scanner cannot be detected"? Is this a windows
error message, or something from the scanner software, or what? Then you say
that the computer recognizes the scanner, but you don't say where it is
recognized. Not having that scanner, I'm not sure what you're referring to
as "modes" is this a software thing, or are you pressing buttons on the
scanner? Has the scanner ever worked? Has it ever worked on this computer?
Are you sure the cable is good? While you're perfectly sure you know what
you're talking about, no one here can actually see what you're seeing, so we
need you to tell us what's going on.
From what you've said, here's the suggestion:
Uninstall all of the software related to the scanner. That means the drivers
and any scanning software, imaging software, etc. Reboot the computer with
scanner disconnected from the computer. Make sure there's no trace of the
Epson or scanner software.
Then start the installation from the beginning, using exactly the method
Epson requires -- sometimes you need to install some of the software before
you plug in the scanner, and plug it in when the software asks, while other
software requires that you plug in the scanner and wait for the "found new
hardware" message. You need to do it exactly the way Epson requires.
Then try it again.