Go to Start, Run, and type in MSCONFIG. Disable everything in Startup group
(tab) and reboot. If this solves your problem, go back and selectively
re-enable one item at a time, reboot and see which program is killing your
startup process. Update, upgrade or remove the offending program.
You'd really have to be much more specific about your computer for people to
be help you out. Is it a fresh install or have you just used Windows Update?
