A very interesting thing has come up regarding SP2 and the motherboard\nindustry in general. An anomaly was detected in the installation of XP SP2\non Intel 865/875 chipset mobos. After SP2 install most all such mobos from\nmost all mfgs would HANG on reboot.\n\nSee this post in: microsoft.public.windowsxp.general\n[URL]http://www.google.com/groups?q=+%22cpu+revision%22+group:*.windowsxp.general+author:cari&hl=en&lr=lang_en&ie=UTF-8&as_drrb=b&as_mind=12&as_minm=5&as_miny=2004&as_maxd=28&as_maxm=8&as_maxy=2004&selm=eAqpSwjiEHA.2664%40TK2MSFTNGP11.phx.gbl&rnum=1[/URL]\n\nAn MVP there Cari had detected the issue and was pursuing it with MS and\nIntel.\n\nCurrent Intel CPUs have the ability to have their internal microcode updated\non the fly(addenda fixed). Apparently that microcode update is done both by\nthe mobo's BIOS during POST and during OS init by\n%windir%\system32\drivers\update.sys.\n\nWhat was determined is that MOST all the major mobo mfgs around are NOT\nkeeping their microcode current, at least for 865/875 chipset mobos, even\nwith recent BIOS updates! That old CPU microcode(non-existent BIOS\nmicrocode update apparently in many cases[=0]) was causing SP2 to hang after\ninstall.\n\nOne can view/report that microcode revision level by running Intel's\nFrequency ID utility. The entry to look for is "CPU Revision = n" where n[QUOTE]\n= 0 which is the microcode revision level.[/QUOTE]\n\nCari's conclusion as apparently gleaned from MS & Intel was that NO major\nmobo mfg has been keeping their microcode(addenda) current EXCEPT Intel.\nCari claimed to have tried a broad range of 865 and 875 chipset mobos with\nSP2 and most all failed! She then said that she'd never use anything except\nan Intel mfged mobo again as if after her eureka moment.\n\nDoes anyone know more precise details of the overall technology involved\nhere and the overall industry competence with respect to CPU microcode\nupdates. What is the BIOS supposed to be doing here; is there any\nstandard? What does %windir%\system32\drivers\update.sys do exactly?\n\nThe implication is that most all of us 865/875 chipset mobo owners (and I\nassume that the issue is MUCH WIDER) have been running with all the CPU\nbugs/addenda UNFIXED!