it is a rather old house but i will try it. after exiting memtest i tried to start the cpu and it shut right back off before i could log into vista. the whole post is what makes me think its a rootkit. i have tested all the hardware and nothing leads me to believe that it is a hardware or power issue. my scheduled scans for kaspersky would start but not scan anything until i manually stopped and restarted the scans. the virus scans found viruses it wasnt able to delete and some it couldnt quarantine but when i left click it wouldnt allow me to send them for analysis and when i followed the path to try to find the items and delete them manually they were not there. at times full scans would not finish and the computer shutdown, after restart kaspersky showed a -1 error in the full scan. any scan that doesnt finish shows this error as it has happened on this computer but only when windows7 forced a restart after updates. after changing the settings for scans their techs told me to change the problem continued and grew into this retarded shutdown cycle. kaspersky rescue disk doesnt work, repairing windows doesnt work, repairing or booting windows from the vista dvd's doesnt work. that tells me two major things, whatever it was went after kaspersky first and after it affected that enough to make windows vunlerable it attacked vista. before the shut down cycle began i did have trouble updating itunes, and when i finally did it corrupted my ipod and my library was empty all of a sudden. i began trying to reestablish my library, we all know how spread out those files can be, but the shutdown cycle started killing vista before i could get it all back in place. all other programs seemed to work fine. i have tried downloading itunes to the laptop temporarily just to get my ipod up and running again but when i download it from the apple secure site i get an error message saying that itunessetup.exe is not a valid win32 application. trying to fix the desktop takes priority over that and unfortunately 2 months later it still havent been able to.