Epson 386SX - Manual (Page 73)

You have three chances to enter the correct password. If you do
not enter the correct password at the first or second key prompt,
another key prompt appears. If you do not enter the correct
password at the third key prompt, the screen displays a 0. The
keyboard locks up and you cannot use the computer. You may
reset the computer and try to enter the correct password again.
Note
If you do not know the correct password, see “Password
Problems” in Appendix A.
Changing a Power-on Password
To change your power-on password, follow these steps:
1. If you do not have a hard disk, insert your Startup diskette
in drive A.
2. Turn on or reset the computer. At the key prompt, enter
your current power-on password followed by a forward slash.
After the slash, enter the new password you want to use. For
example, if your current password is 123 and you want to
change it to ABC, type:
123/ABC
Do not use characters requiring the SHIFT key, such as $,
@, or *, in your new password. The Equity 386SX does not
recognize the SHIFT key when you use your password to
access the system.
The screen does not display what you type.
Using the Equity 386SX 3-3