Epson 486SX - Manual (Page 157)

2. At the MS-DOS command prompt, type
VER
and press
The screen displays the MS-DOS version number.
Write down the number so you can give it to your dealer.
If you did not copy ROMBIOS.COM or you do not have a hard
disk, follow these steps:
1. Insert the Reference diskette in drive A and turn on or reset
your computer.
2. At the Operation Menu,
select Exit to MS-DOS for
more
utilities and press
3. At the
A>
prompt, type
ROMBIOS
and press Write
down the version number displayed on your screen.
4. Remove the Reference diskette and, if necessary, insert
your Startup diskette in drive A. Type
VER
and press
The screen displays the MS-DOS version number.
Write down the number so you can give it to your dealer.
Error Messages
Your computer’s built-in memory (ROM) contains a series of
diagnostics programs, called power-on diagnostics, which your
computer runs automatically every time you turn it on. These
programs check internal devices such as ROM, RAM, the timer,
the keyboard controller, and the hard disk drive.
The RAM test program displays the total amount of memory
currently installed in your system. If the computer finds an
error, it displays an error message on the screen.
If
the
error is not serious, you see this prompt:
(Resume =
"F1" key)
Write down the error message, and press to continue.
B-2 Troubleshooting