Epson 3865X Plus - Manual (Page 268)

5. The problem could be caused by your keyboard. See
“Keyboard Problems,” below.
If your keyboard is operating properly, proceed to the next
step.
6. If you want to stop whatever the computer is doing and
return to the MS-DOS command prompt, hold down the
Ctrl key and press Break (or press C). In most cases, this
solves the problem. See Chapter 3 for more information on
stopping a command or program.
7. If your computer still does not respond, you can reset it
using the CTRL ALT DEL command. If that command
doesn’t work you can reset the computer with the RESET
button. See “Resetting Your Computer” in Chapter 3 for
more information.
8. If resetting the computer does not work, turn off the
computer and wait at least five seconds. If you do not have a
hard disk drive, insert the Startup diskette in drive A. Then
turn on the computer. It should load MS-DOS.
9. If you installed a non-EGA or non-VGA display adapter
card in your computer, and you want to use that adapter as
your primary display adapter, you need to change the setting
of jumper J6 on the main system board to disable the built-
in VGA adapter. If you have not set the jumper, you will
not see any display on the screen.
Troubleshooting D-7