Remove this and that it
O2 - BHO: (no name) - {5C8B2A36-3DB1-42A4-A3CB-D426709BBFEB} - (no file)
You have a AVG update service running
HP software update service
You need to disable all your items in msconfig except the ones you need running like your AV. Does the SW Airlines update for anything?
I would disable everything, reboot, turn on the screen saver and see what happens. If you dont turn off, your problem is in msconfig somewhere