What does Event ID 41 in the System event log mean?

A. Event ID 41 appears on systems with multiple CPUs if the CPUs have different stepping levels. The text in the event log will be:

"The CPUs in this multiprocessor system are not all the same revision level. To use all processors, the operating system restricts itself to the features of the least capable processor in the system. Should problems occur with this system, contact the CPU manufacturer to see if this mix of processors is supported."

Contact your system supplier to ensure that your particular machine will work with Windows 2000 and Windows NT without any problems. For example, if the first CPU supports features A, B, and C, and the second CPU supports feature A, the machine will use only feature A on both CPUs. Also, for these two CPUs to work together, you might need to disable features B and C on the first CPU.

TAGS: Windows 8
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