Computer won't Idle -- no screen saver or auto monitor shut off

Hi all, I've had this problem for a few weeks now. My auto sleep function of either my monitor or screen saver won't work well, soon after a computer restart. Right after a restart things are working normally, but after say 5 hours it doesn't work. It seems that my computer won't idle then.

However, after several hours of computer activity, it stop working!

Things I've tried:
1) Deleted lots of processes in my task manager. Compared a list of programs running when my comp will idle with a list of programs running when my comp won't. Deleted all the ones (I think) that were different.
2) Turning off my mouse and keyboard
3) Trying different options...i.e., monitor sleep, and screen saver. 4) Switching from DP to DVI D.
I have a ASUS PB278Q and a GTX 660. Wireless mouse. Wired keyboard.

It seems like #1 above, has to be it...but so far no luck. Maybe I could use some sort of alternative program. I tried using a screen turn-off .EXE file, but after 1 second the monitor pops back on...as if the mouse were activated. I often fall asleep to movies or forgot to turn of my monitor when I leave my room, so that's why I'd really like this to work normally.This program -- click here -- allows a blank screen saver to activate on click. However, the auto activate doesn't work cause, again, my system won't idle. Also, a blank screen saver isn't as dark as a monitor auto-shut down.

Any help would be VERY MUCH appreciated.

Thanks! I just tried that and yes the option was selected under my RealTek internet mobo adapater. I tried it and was really excited that I might fix it. So far no, but maybe a restart would do it.

Perhaps there is other hardware that I should do this for?

By "wake" we just mean "stop idleing" right? LIke what happens when you move the mouse. I never "sleep" my computer. It's always on. Just want the monitor to auto turn off without me having to press the button.

MilesAhead said:

I would take a look in Device Manager. Go to the device for your network card/interface and look at the Properties. See if it is set to wake on network activity.

MilesAhead,

Thank you SO MUCH. I've been looking of forums for about a week and I've posted this problem---with all the details---at places like overclock.net, etc. You are the only person to have solved it. Thank you. Unchecking the power managment option under my RealTechk Ethernet driver solved the problem. I know have a properly functioning auto-sleep option, as well as a properly functioning screen saver.

Thank you!!!!!!!!!!!!!!