Speed Up Windows 7 Shutdown

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Install Microsoft Windows Performance Toolkit and run the following the collect performance data 
xbootmgr -trace shutdown -noPrepReboot -traceFlags BASE+DRIVERS+CSWITCH+POWER -resultPath C:\trace
After restart, extract shutdown related information from the trace 
xperf /tti -i "shutdown_BASE+DRIVERS+CSWITCH+POWER_1.etl" -o shutdown_info.xml -a shutdown

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