Power-On Self-Test (Post); Post Beep Codes - IBM IntelliStation M Pro 6220 User Manual

Power-on self-test (POST)

When you turn on the computer, the power-on self-test (POST) performs a series of
tests to check the operation of system components and some of the installed
options.
If POST finishes without detecting any problems, the first window of your operating
system or application program appears.
If POST detects a problem, more than one beep sounds and an error message
appears on your screen.
Notes:
1.
2.

POST beep codes

The possible types of beep codes are:
No beeps
Continuous beep
Beep codes for specific failures
If you have a user password set, you must type the password and press Enter,
when prompted, before the operating system will start.
A single problem might cause several error messages. When this occurs, work
to correct the cause of the first error message. After you correct the cause of
the first error message, the other error messages usually will be resolved the
next time you run the test.
If no beep occurs after your computer completes POST, call for service.
Your startup (boot) microprocessor has failed, or your system board or
speaker subsystem might contain a failing component. If the system
continues through POST with no errors, call for service. If no video appears,
the startup processor has failed.
Beep codes indicating specific system problems are listed in the following
table.
Table 3. POST beep codes
Beep code Description
1-1-3 CMOS write/read test has failed.
1-1-4 BIOS EEPROM checksum has failed.
1-2-1 Programmable Interval Timer test has failed.
1-2-2 DMA initialization has failed.
1-2-3 DMA page register write/read test has failed.
1-3-1 First 64 Kb RAM test has failed.
Action
Call for service
Reseat the
memory modules
or install a
memory module. If
the problem
persists, call for
service.
Chapter 5. Solving problems
79