I've had this home-built gaming and web-browsing only PC for a couple of\nyears - no hardware changes\n9CJS\n9600XT\n1 gig Corsair RAM (4 x 256)\nSound blaster Live\nWD 120G HD\nLite-On CDRW\nCBox3\nonboard NIC (Realtek 10/100)\n\nA few weeks ago it started to reboot during shutdown. I first noticed\nbecause it would be on every morning after a scheduled night time defrag\n(I wasn't gaming during that time period due to external issues). It\nwould also not shutdown when I turned it on manually.\n\nAs far as I remember the only "new" things done around the time this\nstarted was the frequent updating by Microsoft for XP :-(\n\nWhen I turned off the 'auto-reboot on failure' switch I saw kernal\nrelated faults(tracked down at websites for XP stop codes) that every\nwebsite, including Microsoft, said were 99% likely to be caused by\nhardware drivers.\n\nI have updated to the latest BIOS (ver 8), video driver from ATI, sound\ndrivers from Creative, Windows XP default drivers for my Lite-On CDRW\nper Lite-On recommendations, ran SpyBot Search and Destroy, Adaware,\nlatest Norton anti-virus, and cleaned my registry. The only drivers I\ndidn't update were the mainboard drivers because I felt the instructions\nsucked.\n\nIf I shutdown from Safe Mode it goes okay. However, if I did a Selective\nStart-up (MSCONFIG) and unchecked EVERYTHING the system would hang up on\nshutdown again. The stop code might be different (depending on what\nitems I unchecked) but it was always a kernal related code.\n\nAny suggestions other than a re-install? Would disabling things in the\nHardware tab allow me to isolate the offending driver?