Awesome , never knew this was possible. I followed all the steps and i see some time improvements, but when i run the export xml command i get an error message in the console. I cannot create the .xml result file to determine the time. Here is what i get in the CMD Shell. (Administrator Rights Enabled) C:\Windows\system32>xperf -i bootPrep_BASE+CSWITCH_1.etl -o 01_summary_start.xml -a boot xperf: warning: applying restriction of access for trace processing xperf: error: 01_summary_start.xml: Failed to open output file [0x80070005]. C:\Windows\system32>xperf -i boot_BASE+CSWITCH_1.etl -o 02_summary_end.xml -a boot xperf: warning: applying restriction of access for trace processing xperf: error: 02_summary_end.xml: Failed to open output file [0x80070005]. Thanks.