IBM Aptiva 2142 - Manual (Page 119)

5. If any POST errors appear after POST, make a note of the errors and
press the Esc key.
A message will display on the screen saying that due to disk space
constraints, no mouse driver has been included in the diskette. One is
available on the Diagnostics and Utilities CD (MOUSE.COM file).
6. Press any key to manually invoke the advanced diagnostics. The
advanced diagnostics will now check out the system.
7. Select an option from the advanced diagnostics Main Menu.
8. Follow the instructions that appear on your screen. If an error occurs,
go to “Index of Symptoms, Messages, Error Codes, or Beeps” on
page 2-9. This Service Level A Diagnostics will not support Low Level
format.
Diagnostic Aids 3-5