Booted to desktop at specific times. Help?

[{Pug}]

My game kicks me out of full-screen mode and back to desktop at exactly 6:30pm and 2:17am every day. I uninstalled anti-virus and ran ad-aware and it still does it. I've read posts about people having a problem with this, but mine is at these exact times. Any idea why? Help would be greatly appreciated! It is really annoying. ><

EDIT: Gonna try going to desktop before normal boot time and ctrl+alt+delete to see what programs become active at that time. I just thought of that as soon as I posted this.. But if anyone has other suggestions or it is happening to them feel free to reply.