had i been in yr place, i would have tried last known good config. else got
into safe mode and disable all startups (excepting ur av/as) from ur startup
list. run msconfig.
now c if u can reboot normally. then u will have 2 try and identify which
program is causing a problem.
--
http://www.WinVistaClub.com
Microsoft MVP 2007 Awardee.