3-2
Chapter 3: Troubleshooting
NOTE:
If you are a system integrator, VAR or OEM, a POST
diagnostics card is recommended. For I/O port 80h codes,
refer to App. B.
Memory Errors
1. Make sure the DIMM modules are properly and fully installed.
2. Determine if different speeds of DIMMs have been installed and verify
that the BIOS setup is configured for the fastest speed of RAM used.
It is recommended to use the same RAM speed for all DIMMs in the
system.
3. Make sure you are using registered ECC, DDR-266 or DDR-200 SDRAM.
If using 533 MHz processors, you must use DDR-266 memory (DDR-
200 is not supported at a 533 MHz front side bus speed).
4. Check for bad DIMM modules or slots by swapping a single module be-
tween two slots and noting the results.
5. Make sure all memory modules are fully seated in their slots. As an
interleaved memory scheme is used, you must install two modules at a
time, beginning with Bank 1, then Bank 2, and so on (see Section 2-3).
6. Check the power supply voltage 115V/230V switch.
No Video
1. If the power is on but you have no video, remove all the add-on cards
and cables.
2. Use the speaker to determine if any beep codes exist. Refer to the
Appendix for details on beep codes.
Losing the System's Setup Configuration
1. Ensure that you are using a high quality power supply. A poor quality
power supply may cause the system to lose the CMOS setup informa-
tion. Refer to Section 1-6 for details on recommended power supplies.
2. The battery on your motherboard may be old. Check to verify that it still
supplies ~3VDC. If it does not, replace it with a new one.
3. If the above steps do not fix the Setup Configuration problem, contact
your vendor for repairs.
