IBM 6644 - Manual (Page 55)

42 User Guide
b. Turn off the computer and wait a few seconds.
c. Turn on any attached devices; then, turn on the computer.
d. Wait the normal amount of time for the first window of your application
or the operating system to be displayed.
Is either the Windows desktop or the first screen of your application
program displayed?
No
- Continue at step 2.
Yes - The power-on self-test (POST) did not detect a problem. Further
diagnostic testing is required. Go to “Running the IBM Enhanced Diagnostics
program” on page 57 and run the diagnostic programs. If you are unable to
run the diagnostic programs or if the diagnostic programs do not detect an
error, go to “Device troubleshooting charts” on page 47.
2. You have an unreadable display or an error message is displayed.
Is an error message displayed?
No
- Continue at step 3.
Yes - Refer to “POST error codes” on page 43 and look for the error message;
then return here.
Is the error message in this table?
No
- The message might be from your software. Refer to documentation for
your application program.
Yes
- Continue at step 4.
3. Go to “Device troubleshooting charts” on page 47. Find the symptom that
best describes the problem, and take the appropriate action. If the problem
persists, have the computer serviced.
4. Did the Configuration/Setup Utility program start automatically after the
error message was displayed?
No - Follow the action for this error message described in “POST error codes”
on page 43.
Yes
- continue to step 5.
5. Have you recently added, removed, or changed any hardware?
No - Have the computer serviced.
Yes - Do one of the following:
• If the failure occurred immediately after you installed or removed an
option, and you have not yet updated the configuration, see “Chapter 4.
Using the Configuration/Setup Utility program,” on page 27.
• If the computer was functioning correctly after you installed an option
and is now malfunctioning, have the computer serviced.
• If the failure occurred immediately after you made a change to the
configuration, verify that you selected the correct settings.