Computer starts itself

I recently upgraded my computer from win 98 SE to Win 2000 professional.

I noticed that the computer is turning itself on about 7:30 in the morning. I’ve checked my CMOS but could not find anything out of the ordinary.

I’ve also scaned my entired system, compressed files also for any virus’s. I keep Mcafee up to date on a daily basis.

Does anyone have any idea what is causing this.