Action
1. Be sure that each processor is supported by the compute module and is installed as directed in the
compute module documentation. The processor socket requires very specific installation steps and
only supported processors should be installed.
For processor requirements, see the compute module user guide.
2. Be sure the compute module ROM is current.
3. Be sure that you are not mixing processor stepping, core speeds, or cache sizes if this is not
supported on the compute module.
For more information, see the product QuickSpecs.
4. If the compute module has only one processor installed, reseat the processor. If the issue is resolved
after you restart the compute module, the processor was not installed properly.
5. If the compute module has only one processor installed, replace it with a known functional processor.
If the issue is resolved after you restart the compute module, the original processor failed.
6. If the compute module has multiple processors installed, test each processor:
a. Remove all but one processor from the compute module. If applicable to the compute module,
replace each with a processor terminator board or blank.
b. Replace the remaining processor with a known functional processor. If the issue is resolved after
you restart the compute module, a fault exists with one or more of the original processors. Install
each processor one by one, restarting each time, to find the faulty processor or processors. At each
step, be sure the compute module supports the processor configurations.
Uncorrectable machine check exception
Symptom
A POST error message or an IML message is received indicating an uncorrectable machine check
exception.
CAUTION: Before removing or replacing any processors, be sure to follow the guidelines provided
in Processor troubleshooting guidelines. Failure to follow the recommended guidelines can damage
the system board, requiring replacement of the system board.
Action
Replace the processor.
For more information, see the compute module maintenance and service guide in the Hewlett Packard
Enterprise Information Library.
More information
Processor troubleshooting guidelines on page 27
Hardware issues 49
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