i think he quotting it from other source,.. i decided to pm sarf2k4(the one who post it) this how the reply goes.. Hi, kindly refer to this blog post of mine about WPT, http://sarf2k4.blogspot.com/2011/02/windows-performance-toolkit-wpt.html My laptop has been very slow at booting lately and running WPT won't do any good as well, this problem mainly lies on windows update I believe, but I didn't say that u should stop windows update, maybe there's something going on with the original win7 home premium bundled with this machine. I've verified about the changing registry in for the wpt to work, but i've confirmed that it's a fake wpt optimization, usually, after u format the pc or installed a full windows update after the format, u would run the wpt, but as the time goes by, the wpt stopped working, even for me and i dont think there's a solution to make the wpt optimizes ur laptop even with the registry fixes hope this information helps he said about try to defrag 1~2 times bfore doing the boot trace in the blog...