IBM Aptiva Handbook page 138

Step 2
Did the system unit beep after it was turned on?
Yes, once
The system unit has passed the power-on self test (POST). Go to Step 3.
Yes, more than once There is a problem with the system unit. Find the code in "Responding to error
codes" on page 141 and take the action listed.
There is a hardware problem. If you added hardware, remove it and restart the
No
computer to see if the problem is corrected. If the problem is corrected, you may
have installed your hardware incorrectly. Reinstall your hardware.
For instructions on installing hardware in your desktop system unit, see "Working
with the hardware in the desktop system unit" on page 78. For instructions on
installing hardware in your minitower system unit, see "Working with the
hardware in the minitower system unit" on page 100. For instructions on installing
hardware on your system board, see "Adding and replacing system board
components" on page 61.
If the problem continues, check your Guide to HelpWare and All the Extras folder
for information on obtaining service.
124 Chapter 8: Diagnosing and recovering from problems