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18 Mar 2012  
cluberti

Windows Server 2008 R2
 
 

Note that this is actually something seen with network drivers that don't actually support RSS properly - when the computer resumes from a sleep event (sleep or hibernate), one CPU can get completely used by the driver (which normally can spread the load across at least 4 CPUs to do RSS scheduling). If you disable the network cards in the machine (start > ncpa.cpl) and pull the network cable (if it's wired), does the problem go away?
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