First of all, great guide, Andre! Of all the guides I was able to find, yours was the most straightforward and easy to follow. I'm usually fairly adept at troubleshooting and solving my computer problems, but this was my first exposure to Windows Performance Tools and tracing. Definitely a very useful tool, so thank you! My computer has been seeing high CPU usage (30-40% and up) rather than the usual 3% or so, for several days now, and it seems to have come after I installed a game or my wireless card for my desktop. Unfortunately, I'm not sure which caused the problem. I was made aware of the issue by a report in Performance Monitor saying that there are 'High average interrupts/processor.' Following your guide, I ran a trace and selected a segment of the graph showing the Interrupt CPU usage at its highest points, and then I clicked Show Summary. It seems the culprit is listed under Module as 'Unknown' and it is a few orders of magnitude higher than the next highest count (3,XXX,XXX vs. 2X,XXX). Could this be due to the fact that my wireless card is quite old and intended for Windows XP at the latest? I had to mess around with drivers manually quite a bit to get the wireless to work, which it eventually did. However, I disabled the wireless card and am now just using my ethernet port. I can run another trace and upload the ETL if you would like to look at it, but perhaps my description of the trace summary is sufficient. Please advise, and thanks for the great thread!
