HP ProLiant DL120 G5 Server - Manual (Page 62)

Troubleshooting 62
Server fails to recognize existing memory
Action:
1. Reseat the memory. Use care when handling DIMMs (" DIMM handling guidelines " on page 38 ).
2. Be sure the memory is configured properly. See the server documentation.
3. Be sure a memory count error did not occur (" Memory count error exists " on page 61 ). See the
message displaying memory count during POST.
Server fails to recognize new memory
Action:
1. Be sure the memory is the correct type for the server and is installed according to the server
requirements. Refer to the server documentation or HP website (
http://www.hp.com ).
2. Be sure you have not exceeded the memory limits of the server or operating system. Refer to the
server documentation.
3. Be sure the memory is properly seated.
4. Be sure no conflicts are occurring with existing memory. Run the server setup utility.
5. Test the memory by installing the memory into a known working server. Be sure the memory meets
the requirements of the new server on which you are testing the memory.
6. Replace the memory. Refer to the server documentation.
Processor problems
Action:
1. If applicable, check the processor LEDs to identify if a PPM failure occurred. For information on LEDs,
refer to the server documentation.
2. Be sure each processor is supported by the server and is installed properly. Refer to the server
documentation for processor requirements.
3. Be sure the server ROM is up to date.
4. Be sure you are not mixing processor stepping, core speeds, or cache sizes if this is not supported
on the server. Refer to the server documentation for more information.
CAUTION: Removal of some processors and heatsinks require special considerations for
replacement, while other processors and heatsinks are integrated and cannot be reused once
separated. For specific instructions for the server you are troubleshooting, refer to processor
information in the Hardware options installation (on page
15 ) section on the Documentation
CD.
5. If the server has only one processor installed, replace it with a known functional processor. If the
problem is resolved after you restart the server, the original processor failed.
6. If the server has multiple processors installed, test each processor:
a. Remove all but one processor from the server. Replace each with a processor terminator board
or blank, if applicable to the server.
b. If the server includes PPMs that are not integrated on the system board, remove all PPMs from the
server except for the PPM associated with the remaining processor.
c. Replace the remaining processor with a known functional processor. If the problem is resolved
after you restart the server, a fault exists with one or more of the original processors. Install each