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B. If the system becomes unstable before or during OS installation, check the following:
1. Source of installation: Make sure that the devices used for installation are working properly,
including boot devices such as CD/Media drive.
2. Cable connection: Check to make sure that all cables are connected and working properly.
3. Use the minimum configuration for troubleshooting: Remove all unnecessary components
(starting with add-on cards first), and use the minimum configuration (but with the CPU
and a memory module installed) to identify the trouble areas. Refer to the steps listed in
Section A above for proper troubleshooting procedures.
4. Identifying bad components by isolating them. If necessary, remove a component in
question from the chassis, and test it in isolation to make sure that it works properly.
Replace a bad component with a good one.
5. Check and change one component at a time instead of changing several items at the same
time. This will help isolate and identify the problem.
6. To find out if a component is good, swap this component with a new one to see if the
system will work properly. If so, then the old component is bad. You can also install the
component in question in another system. If the new system works, the component is good
and the old system has problems.
6.3 BIOS Error Beep (POST Codes)
During the Power-On Self-Test (POST) routines, which are performed each time the system
is powered on, errors may occur.
Non-fatal errors are those which, in most cases, allow the system to continue the boot-up
process. The error messages normally appear on the screen.
Fatal errors are those which will not allow the system to continue the boot-up procedure. If
a fatal error occurs, you should consult with your system manufacturer for possible repairs.
These fatal errors are usually communicated through a series of audible beeps. The table
shown below lists some common errors and their corresponding beep codes encountered
by users.
Beep Code
1 beep
5 short, 1 long
5 long, 2 short
1 long continuous
BIOS Beep (POST) Codes
Error Message
Refresh
Memory error
Display memory read/write error
System ON
Chapter 6: Troubleshooting and Support
Description
Circuits have been reset (Ready to power up)
No memory detected in system
Video adapter missing or with faulty memory
System overheat condition
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Table of Contents
Troubleshooting
