IBM Aptiva Reference Manual page 64

Error code and description
201
Memory Error at
MMMM:SSSS:OOOOh
(R:xxxxh, W:xxxh)
301
PS/2 Keyboard Error or
Keyboard Not Connected
303
PS/2 Keyboard Interface
Error
648
Floppy Drive(s) Write
Protected
60
Here's what to do...
1 Make sure the DIMMs are properly installed, then
reboot the system.
2 If you still receive the error message after doing
option 1, the DIMMs may be defective. Change the
DIMMs.
For instructions on working with system board
components, see the Aptiva online help.
1 Plug in the keyboard properly and reboot the system.
2 If the error still shows after doing option 1, change
your keyboard. It may be defective.
1 Plug in the keyboard properly and reboot the system.
2 If the error still shows after doing option 1, change
your keyboard. It may be defective.
1 Make sure the diskette protection tab is set correctly.
2 Enter Setup. Select Advanced Options then Security
Options. For information on Setup Utility options, see
the Aptiva online help.
3 Make sure that the Diskette Drive parameter is set to
Normal. For information on using the Setup Utility, see
"Using the Setup Utility" on page 71.
If any of these problems continue after taking the actions
listed, run the diagnostics programs that came with your
computer. If you need service, see "HelpWare support and
services" on page 79.
Responding to error codes