When done using computer, I generally click on "sleep".

[MomnDad]

Later when I return to use the computer, it has turned itself back on. Using Norton 360. Is that the problem?

 

[Airbot]

Might check out some of these tutorials.

http://www.sevenforums.com/tutorials/122012-lastwake-command.html
http://www.sevenforums.com/tutorials/122027-devices-allow-prevent-wake-up-computer.html
http://www.sevenforums.com/tutorials/122019-devices-see-devices-able-wake-up-computer.html

Could also see if disabling wake timers under sleep in power plan settings would stop it for you, if you don't want them at all.

http://www.sevenforums.com/tutorials/778-power-plan-settings-change.html