There are some very good tools, techniques, and lessons-learned in the following articles:
Why does WMI Provider Host ( WmiPrvSE.exe ) keep spiking my CPU ?
http://superuser.com/questions/240794/why-does-wmi-provider-host-wmiprvse-exe-keep-spiking-my-cpu
Windows Crash Dump Analysis...
http://www.osronline.com/page.cfm?name=analyze
API Monitor
http://www.rohitab.com/apimonitor
Is WMIprvse a real villain?
http://blogs.msdn.com/b/wmi/archive/2009/05/27/is-wmiprvse-a-real-villain.aspx
As the first article mentions an earlier version of the HP Wireless Assistant as a possible culprit to CPU over-utilization, here's the link to the download for the latest version:
http://h10025.www1.hp.com/ewfrf/wc/softwareDownloadIndex?lc=en&cc=us&destPage=softwareDownloadIndex&softwareitem=ob-87841-1&=
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